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Finding the Fourth Proportional to 412,920.60, 619,380.90 and 132,466.20

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Solution

The fourth proportional to 412,920.60, 619,380.90 and 132,466.20 is: 198,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,920.60 : 619,380.90 = 132,466.20 : x
  2. Step 2: Convert to fraction form
    412,920.60/619,380.90 = 132,466.20/x
  3. Step 3: Cross multiply
    412,920.60x = 619,380.90 × 132,466.20
  4. Step 4: Simplify right side
    412,920.60x = 82,047,034,175.58
  5. Step 5: Solve for x
    x = 82,047,034,175.58/412,920.60
  6. Step 6: Final answer
    x = 198,699.30

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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.