Question

3:243::5 :?
Select answer 425 ,465, 564, 3125 what is answer?​

Answer 1

$\huge\boxed{\fcolorbox{lime}{yellow}{Solution}}$

$3:243::5 :? \\ \frac{3}{243} = \frac{5}{x} \\ x = \frac{5 \times 243}{3} \\ x = \frac{1215}{3} \\ x = 405$

The answer is 405.

❥ Hope it helps.