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Finding the Fourth Proportional to 482,684.60, 724,143.95 and 145,705.12

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Solution

The fourth proportional to 482,684.60, 724,143.95 and 145,705.12 is: 218,593.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,684.60 : 724,143.95 = 145,705.12 : x
  2. Step 2: Convert to fraction form
    482,684.60/724,143.95 = 145,705.12/x
  3. Step 3: Cross multiply
    482,684.60x = 724,143.95 × 145,705.12
  4. Step 4: Simplify right side
    482,684.60x = 105,511,478,121.21
  5. Step 5: Solve for x
    x = 105,511,478,121.21/482,684.60
  6. Step 6: Final answer
    x = 218,593.01

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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.