Finding the Fourth Proportional to 378,808.14, 522,753.40 and 209,052.66
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Solution
The fourth proportional to 378,808.14, 522,753.40 and 209,052.66 is: 288,491.66
Step by Step Solution
- Step 1: Write the proportion equation
378,808.14 : 522,753.40 = 209,052.66 : x - Step 2: Convert to fraction form
378,808.14/522,753.40 = 209,052.66/x - Step 3: Cross multiply
378,808.14x = 522,753.40 × 209,052.66 - Step 4: Simplify right side
378,808.14x = 109,282,988,794.04 - Step 5: Solve for x
x = 109,282,988,794.04/378,808.14 - Step 6: Final answer
x = 288,491.66
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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.