Finding the Fourth Proportional to 387,217.99, 534,356.92 and 212,791.06
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Solution
The fourth proportional to 387,217.99, 534,356.92 and 212,791.06 is: 293,649.52
Step by Step Solution
- Step 1: Write the proportion equation
387,217.99 : 534,356.92 = 212,791.06 : x - Step 2: Convert to fraction form
387,217.99/534,356.92 = 212,791.06/x - Step 3: Cross multiply
387,217.99x = 534,356.92 × 212,791.06 - Step 4: Simplify right side
387,217.99x = 113,706,375,425.14 - Step 5: Solve for x
x = 113,706,375,425.14/387,217.99 - Step 6: Final answer
x = 293,649.52
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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.