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Finding the Fourth Proportional to 231,640.20, 347,201.10 and 131,848.20

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Solution

The fourth proportional to 231,640.20, 347,201.10 and 131,848.20 is: 197,624.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,640.20 : 347,201.10 = 131,848.20 : x
  2. Step 2: Convert to fraction form
    231,640.20/347,201.10 = 131,848.20/x
  3. Step 3: Cross multiply
    231,640.20x = 347,201.10 × 131,848.20
  4. Step 4: Simplify right side
    231,640.20x = 45,777,840,073.02
  5. Step 5: Solve for x
    x = 45,777,840,073.02/231,640.20
  6. Step 6: Final answer
    x = 197,624.76

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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.