Finding the Fourth Proportional to 378,934.97, 522,929.18 and 209,167.88
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Solution
The fourth proportional to 378,934.97, 522,929.18 and 209,167.88 is: 288,651.08
Step by Step Solution
- Step 1: Write the proportion equation
378,934.97 : 522,929.18 = 209,167.88 : x - Step 2: Convert to fraction form
378,934.97/522,929.18 = 209,167.88/x - Step 3: Cross multiply
378,934.97x = 522,929.18 × 209,167.88 - Step 4: Simplify right side
378,934.97x = 109,379,985,879.01 - Step 5: Solve for x
x = 109,379,985,879.01/378,934.97 - Step 6: Final answer
x = 288,651.08
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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.