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Finding the Fourth Proportional to 482,800.80, 724,546.80 and 272,215.20

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Solution

The fourth proportional to 482,800.80, 724,546.80 and 272,215.20 is: 408,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,800.80 : 724,546.80 = 272,215.20 : x
  2. Step 2: Convert to fraction form
    482,800.80/724,546.80 = 272,215.20/x
  3. Step 3: Cross multiply
    482,800.80x = 724,546.80 × 272,215.20
  4. Step 4: Simplify right side
    482,800.80x = 197,232,652,071.36
  5. Step 5: Solve for x
    x = 197,232,652,071.36/482,800.80
  6. Step 6: Final answer
    x = 408,517.66

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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.