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Finding the Fourth Proportional to 482,900.30, 724,318.05 and 127,906.70

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Solution

The fourth proportional to 482,900.30, 724,318.05 and 127,906.70 is: 191,851.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,900.30 : 724,318.05 = 127,906.70 : x
  2. Step 2: Convert to fraction form
    482,900.30/724,318.05 = 127,906.70/x
  3. Step 3: Cross multiply
    482,900.30x = 724,318.05 × 127,906.70
  4. Step 4: Simplify right side
    482,900.30x = 92,645,131,525.94
  5. Step 5: Solve for x
    x = 92,645,131,525.94/482,900.30
  6. Step 6: Final answer
    x = 191,851.47

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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.