Unfortunately, finding a perfect solution for this issue seems to be quite challenging. Despite numerous hacks available, none of them seem to offer a satisfactory fix. Utilizing Javascript appears to be the only viable option, but it may consume excessive bandwidth for minor tasks. However, if you are using jQuery for other functions, then it could prove to be useful.
CSS 3 introduces new rules that allow for more flexibility, but the lack of full support for CSS 3 in many browsers, especially older versions like IE6/7, complicates the situation further.
If achieving the desired layout is absolutely crucial, resorting to minimal table usage could be a viable workaround. While some may argue against it, tables can still work effectively across most desktop and mobile browsers, as long as they are not nested beyond two levels deep.
Alternatively, designing layout structures that do not heavily rely on comparing the heights of other div elements could provide a more sustainable solution.