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Finding the Fourth Proportional to 272,565.46, 408,819.43 and 72,906

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Solution

The fourth proportional to 272,565.46, 408,819.43 and 72,906 is: 109,351.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,565.46 : 408,819.43 = 72,906 : x
  2. Step 2: Convert to fraction form
    272,565.46/408,819.43 = 72,906/x
  3. Step 3: Cross multiply
    272,565.46x = 408,819.43 × 72,906
  4. Step 4: Simplify right side
    272,565.46x = 29,805,389,363.58
  5. Step 5: Solve for x
    x = 29,805,389,363.58/272,565.46
  6. Step 6: Final answer
    x = 109,351.31

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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.