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Finding the Fourth Proportional to 231,651.20, 347,217.60 and 131,859.20

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Solution

The fourth proportional to 231,651.20, 347,217.60 and 131,859.20 is: 197,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,651.20 : 347,217.60 = 131,859.20 : x
  2. Step 2: Convert to fraction form
    231,651.20/347,217.60 = 131,859.20/x
  3. Step 3: Cross multiply
    231,651.20x = 347,217.60 × 131,859.20
  4. Step 4: Simplify right side
    231,651.20x = 45,783,834,961.92
  5. Step 5: Solve for x
    x = 45,783,834,961.92/231,651.20
  6. Step 6: Final answer
    x = 197,641.26

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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.