Finding the Fourth Proportional to 378,135.99, 521,109.86 and 270,519.17
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Solution
The fourth proportional to 378,135.99, 521,109.86 and 270,519.17 is: 372,802.92
Step by Step Solution
- Step 1: Write the proportion equation
378,135.99 : 521,109.86 = 270,519.17 : x - Step 2: Convert to fraction form
378,135.99/521,109.86 = 270,519.17/x - Step 3: Cross multiply
378,135.99x = 521,109.86 × 270,519.17 - Step 4: Simplify right side
378,135.99x = 140,970,202,847.87 - Step 5: Solve for x
x = 140,970,202,847.87/378,135.99 - Step 6: Final answer
x = 372,802.92
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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.