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Finding the Fourth Proportional to 482,697.17, 724,162.79 and 145,717.70

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Solution

The fourth proportional to 482,697.17, 724,162.79 and 145,717.70 is: 218,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,697.17 : 724,162.79 = 145,717.70 : x
  2. Step 2: Convert to fraction form
    482,697.17/724,162.79 = 145,717.70/x
  3. Step 3: Cross multiply
    482,697.17x = 724,162.79 × 145,717.70
  4. Step 4: Simplify right side
    482,697.17x = 105,523,332,927.86
  5. Step 5: Solve for x
    x = 105,523,332,927.86/482,697.17
  6. Step 6: Final answer
    x = 218,611.88

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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.