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Finding the Fourth Proportional to 636,514.56, 954,569.76 and 215,691.84

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Solution

The fourth proportional to 636,514.56, 954,569.76 and 215,691.84 is: 323,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,514.56 : 954,569.76 = 215,691.84 : x
  2. Step 2: Convert to fraction form
    636,514.56/954,569.76 = 215,691.84/x
  3. Step 3: Cross multiply
    636,514.56x = 954,569.76 × 215,691.84
  4. Step 4: Simplify right side
    636,514.56x = 205,892,907,942.76
  5. Step 5: Solve for x
    x = 205,892,907,942.76/636,514.56
  6. Step 6: Final answer
    x = 323,469.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.