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Finding the Fourth Proportional to 482,678.40, 724,017.60 and 132,470.40

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Solution

The fourth proportional to 482,678.40, 724,017.60 and 132,470.40 is: 198,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,678.40 : 724,017.60 = 132,470.40 : x
  2. Step 2: Convert to fraction form
    482,678.40/724,017.60 = 132,470.40/x
  3. Step 3: Cross multiply
    482,678.40x = 724,017.60 × 132,470.40
  4. Step 4: Simplify right side
    482,678.40x = 95,910,901,079.04
  5. Step 5: Solve for x
    x = 95,910,901,079.04/482,678.40
  6. Step 6: Final answer
    x = 198,705.60

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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.