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Finding the Fourth Proportional to 231,607.20, 347,151.60 and 131,815.20

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Solution

The fourth proportional to 231,607.20, 347,151.60 and 131,815.20 is: 197,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,607.20 : 347,151.60 = 131,815.20 : x
  2. Step 2: Convert to fraction form
    231,607.20/347,151.60 = 131,815.20/x
  3. Step 3: Cross multiply
    231,607.20x = 347,151.60 × 131,815.20
  4. Step 4: Simplify right side
    231,607.20x = 45,759,857,584.32
  5. Step 5: Solve for x
    x = 45,759,857,584.32/231,607.20
  6. Step 6: Final answer
    x = 197,575.28

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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.