Finding the Fourth Proportional to 378,175.11, 521,907.47 and 231,062.95
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Solution
The fourth proportional to 378,175.11, 521,907.47 and 231,062.95 is: 318,882.65
Step by Step Solution
- Step 1: Write the proportion equation
378,175.11 : 521,907.47 = 231,062.95 : x - Step 2: Convert to fraction form
378,175.11/521,907.47 = 231,062.95/x - Step 3: Cross multiply
378,175.11x = 521,907.47 × 231,062.95 - Step 4: Simplify right side
378,175.11x = 120,593,479,645.24 - Step 5: Solve for x
x = 120,593,479,645.24/378,175.11 - Step 6: Final answer
x = 318,882.65
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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.