Finding the Fourth Proportional to 378,971.17, 522,966.50 and 209,201.65
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Solution
The fourth proportional to 378,971.17, 522,966.50 and 209,201.65 is: 288,690.71
Step by Step Solution
- Step 1: Write the proportion equation
378,971.17 : 522,966.50 = 209,201.65 : x - Step 2: Convert to fraction form
378,971.17/522,966.50 = 209,201.65/x - Step 3: Cross multiply
378,971.17x = 522,966.50 × 209,201.65 - Step 4: Simplify right side
378,971.17x = 109,405,454,694.73 - Step 5: Solve for x
x = 109,405,454,694.73/378,971.17 - Step 6: Final answer
x = 288,690.71
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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.