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Finding the Fourth Proportional to 482,908.80, 724,359.60 and 145,948.80

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Solution

The fourth proportional to 482,908.80, 724,359.60 and 145,948.80 is: 218,922.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,908.80 : 724,359.60 = 145,948.80 : x
  2. Step 2: Convert to fraction form
    482,908.80/724,359.60 = 145,948.80/x
  3. Step 3: Cross multiply
    482,908.80x = 724,359.60 × 145,948.80
  4. Step 4: Simplify right side
    482,908.80x = 105,719,414,388.48
  5. Step 5: Solve for x
    x = 105,719,414,388.48/482,908.80
  6. Step 6: Final answer
    x = 218,922.11

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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.