Home / 486,414.40-729,621.60-131,483.20

Finding the Fourth Proportional to 486,414.40, 729,621.60 and 131,483.20

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Solution

The fourth proportional to 486,414.40, 729,621.60 and 131,483.20 is: 197,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,414.40 : 729,621.60 = 131,483.20 : x
  2. Step 2: Convert to fraction form
    486,414.40/729,621.60 = 131,483.20/x
  3. Step 3: Cross multiply
    486,414.40x = 729,621.60 × 131,483.20
  4. Step 4: Simplify right side
    486,414.40x = 95,932,982,757.12
  5. Step 5: Solve for x
    x = 95,932,982,757.12/486,414.40
  6. Step 6: Final answer
    x = 197,224.80

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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.