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Finding the Fourth Proportional to 482,857.40, 724,286.10 and 127,907.30

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Solution

The fourth proportional to 482,857.40, 724,286.10 and 127,907.30 is: 191,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,857.40 : 724,286.10 = 127,907.30 : x
  2. Step 2: Convert to fraction form
    482,857.40/724,286.10 = 127,907.30/x
  3. Step 3: Cross multiply
    482,857.40x = 724,286.10 × 127,907.30
  4. Step 4: Simplify right side
    482,857.40x = 92,641,479,478.53
  5. Step 5: Solve for x
    x = 92,641,479,478.53/482,857.40
  6. Step 6: Final answer
    x = 191,860.95

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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.