Finding the Fourth Proportional to 291,730,355.78, 402,589,103.92 and 157,768,272.02
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Solution
The fourth proportional to 291,730,355.78, 402,589,103.92 and 157,768,272.02 is: 217,720,871.35
Step by Step Solution
- Step 1: Write the proportion equation
291,730,355.78 : 402,589,103.92 = 157,768,272.02 : x - Step 2: Convert to fraction form
291,730,355.78/402,589,103.92 = 157,768,272.02/x - Step 3: Cross multiply
291,730,355.78x = 402,589,103.92 × 157,768,272.02 - Step 4: Simplify right side
291,730,355.78x = 63,515,787,259,538,616 - Step 5: Solve for x
x = 63,515,787,259,538,616/291,730,355.78 - Step 6: Final answer
x = 217,720,871.35
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.