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Finding the Fourth Proportional to 231,662.20, 347,687.70 and 113,434.60

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Solution

The fourth proportional to 231,662.20, 347,687.70 and 113,434.60 is: 170,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,662.20 : 347,687.70 = 113,434.60 : x
  2. Step 2: Convert to fraction form
    231,662.20/347,687.70 = 113,434.60/x
  3. Step 3: Cross multiply
    231,662.20x = 347,687.70 × 113,434.60
  4. Step 4: Simplify right side
    231,662.20x = 39,439,815,174.42
  5. Step 5: Solve for x
    x = 39,439,815,174.42/231,662.20
  6. Step 6: Final answer
    x = 170,247.09

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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.