Finding the Fourth Proportional to 378,882.30, 522,820.35 and 209,105.46
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Solution
The fourth proportional to 378,882.30, 522,820.35 and 209,105.46 is: 288,544.99
Step by Step Solution
- Step 1: Write the proportion equation
378,882.30 : 522,820.35 = 209,105.46 : x - Step 2: Convert to fraction form
378,882.30/522,820.35 = 209,105.46/x - Step 3: Cross multiply
378,882.30x = 522,820.35 × 209,105.46 - Step 4: Simplify right side
378,882.30x = 109,324,589,784.11 - Step 5: Solve for x
x = 109,324,589,784.11/378,882.30 - Step 6: Final answer
x = 288,544.99
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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.