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Finding the Fourth Proportional to 482,700.92, 724,168.43 and 145,721.45

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Solution

The fourth proportional to 482,700.92, 724,168.43 and 145,721.45 is: 218,617.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,700.92 : 724,168.43 = 145,721.45 : x
  2. Step 2: Convert to fraction form
    482,700.92/724,168.43 = 145,721.45/x
  3. Step 3: Cross multiply
    482,700.92x = 724,168.43 × 145,721.45
  4. Step 4: Simplify right side
    482,700.92x = 105,526,869,314.37
  5. Step 5: Solve for x
    x = 105,526,869,314.37/482,700.92
  6. Step 6: Final answer
    x = 218,617.50

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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.