Finding the Fourth Proportional to 438,512,350.90, 657,851,484.72 and 176,217,320.44
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Solution
The fourth proportional to 438,512,350.90, 657,851,484.72 and 176,217,320.44 is: 264,359,317.70
Step by Step Solution
- Step 1: Write the proportion equation
438,512,350.90 : 657,851,484.72 = 176,217,320.44 : x - Step 2: Convert to fraction form
438,512,350.90/657,851,484.72 = 176,217,320.44/x - Step 3: Cross multiply
438,512,350.90x = 657,851,484.72 × 176,217,320.44 - Step 4: Simplify right side
438,512,350.90x = 115,924,825,884,834,000 - Step 5: Solve for x
x = 115,924,825,884,834,000/438,512,350.90 - Step 6: Final answer
x = 264,359,317.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.