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Finding the Fourth Proportional to 482,708.30, 724,062.45 and 127,758.20

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Solution

The fourth proportional to 482,708.30, 724,062.45 and 127,758.20 is: 191,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,708.30 : 724,062.45 = 127,758.20 : x
  2. Step 2: Convert to fraction form
    482,708.30/724,062.45 = 127,758.20/x
  3. Step 3: Cross multiply
    482,708.30x = 724,062.45 × 127,758.20
  4. Step 4: Simplify right side
    482,708.30x = 92,504,915,299.59
  5. Step 5: Solve for x
    x = 92,504,915,299.59/482,708.30
  6. Step 6: Final answer
    x = 191,637.30

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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.