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Finding the Fourth Proportional to 408,863.60, 613,324.20 and 231,455.60

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Solution

The fourth proportional to 408,863.60, 613,324.20 and 231,455.60 is: 347,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,863.60 : 613,324.20 = 231,455.60 : x
  2. Step 2: Convert to fraction form
    408,863.60/613,324.20 = 231,455.60/x
  3. Step 3: Cross multiply
    408,863.60x = 613,324.20 × 231,455.60
  4. Step 4: Simplify right side
    408,863.60x = 141,957,320,705.52
  5. Step 5: Solve for x
    x = 141,957,320,705.52/408,863.60
  6. Step 6: Final answer
    x = 347,199.70

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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.