Finding the Fourth Proportional to 355,904,952.78, 491,153,905.12 and 205,194,627.12
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Solution
The fourth proportional to 355,904,952.78, 491,153,905.12 and 205,194,627.12 is: 283,171,508.66
Step by Step Solution
- Step 1: Write the proportion equation
355,904,952.78 : 491,153,905.12 = 205,194,627.12 : x - Step 2: Convert to fraction form
355,904,952.78/491,153,905.12 = 205,194,627.12/x - Step 3: Cross multiply
355,904,952.78x = 491,153,905.12 × 205,194,627.12 - Step 4: Simplify right side
355,904,952.78x = 100,782,142,419,630,256 - Step 5: Solve for x
x = 100,782,142,419,630,256/355,904,952.78 - Step 6: Final answer
x = 283,171,508.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.