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Finding the Fourth Proportional to 231,794.40, 347,691.60 and 142,759.20

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Solution

The fourth proportional to 231,794.40, 347,691.60 and 142,759.20 is: 214,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,794.40 : 347,691.60 = 142,759.20 : x
  2. Step 2: Convert to fraction form
    231,794.40/347,691.60 = 142,759.20/x
  3. Step 3: Cross multiply
    231,794.40x = 347,691.60 × 142,759.20
  4. Step 4: Simplify right side
    231,794.40x = 49,636,174,662.72
  5. Step 5: Solve for x
    x = 49,636,174,662.72/231,794.40
  6. Step 6: Final answer
    x = 214,138.80

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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.