Finding the Fourth Proportional to 319,435,687.44, 440,821,542.60 and 172,757,971.44
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Solution
The fourth proportional to 319,435,687.44, 440,821,542.60 and 172,757,971.44 is: 238,406,159.55
Step by Step Solution
- Step 1: Write the proportion equation
319,435,687.44 : 440,821,542.60 = 172,757,971.44 : x - Step 2: Convert to fraction form
319,435,687.44/440,821,542.60 = 172,757,971.44/x - Step 3: Cross multiply
319,435,687.44x = 440,821,542.60 × 172,757,971.44 - Step 4: Simplify right side
319,435,687.44x = 76,155,435,466,627,552 - Step 5: Solve for x
x = 76,155,435,466,627,552/319,435,687.44 - Step 6: Final answer
x = 238,406,159.55
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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.