Finding the Fourth Proportional to 437,618.31, 656,427.56 and 138,129.14
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Solution
The fourth proportional to 437,618.31, 656,427.56 and 138,129.14 is: 207,193.73
Step by Step Solution
- Step 1: Write the proportion equation
437,618.31 : 656,427.56 = 138,129.14 : x - Step 2: Convert to fraction form
437,618.31/656,427.56 = 138,129.14/x - Step 3: Cross multiply
437,618.31x = 656,427.56 × 138,129.14 - Step 4: Simplify right side
437,618.31x = 90,671,770,362.31 - Step 5: Solve for x
x = 90,671,770,362.31/437,618.31 - Step 6: Final answer
x = 207,193.73
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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.