Finding the Fourth Proportional to 378,929.32, 522,922.90 and 209,163.44
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Solution
The fourth proportional to 378,929.32, 522,922.90 and 209,163.44 is: 288,645.79
Step by Step Solution
- Step 1: Write the proportion equation
378,929.32 : 522,922.90 = 209,163.44 : x - Step 2: Convert to fraction form
378,929.32/522,922.90 = 209,163.44/x - Step 3: Cross multiply
378,929.32x = 522,922.90 × 209,163.44 - Step 4: Simplify right side
378,929.32x = 109,376,352,618.78 - Step 5: Solve for x
x = 109,376,352,618.78/378,929.32 - Step 6: Final answer
x = 288,645.79
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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.