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Finding the Fourth Proportional to 482,874.40, 724,311.60 and 127,943.20

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Solution

The fourth proportional to 482,874.40, 724,311.60 and 127,943.20 is: 191,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,874.40 : 724,311.60 = 127,943.20 : x
  2. Step 2: Convert to fraction form
    482,874.40/724,311.60 = 127,943.20/x
  3. Step 3: Cross multiply
    482,874.40x = 724,311.60 × 127,943.20
  4. Step 4: Simplify right side
    482,874.40x = 92,670,743,901.12
  5. Step 5: Solve for x
    x = 92,670,743,901.12/482,874.40
  6. Step 6: Final answer
    x = 191,914.80

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Similar ratio
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1.5x scale

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.