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Finding the Fourth Proportional to 231,469.90, 347,232.59 and 81,679.25

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Solution

The fourth proportional to 231,469.90, 347,232.59 and 81,679.25 is: 122,528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,469.90 : 347,232.59 = 81,679.25 : x
  2. Step 2: Convert to fraction form
    231,469.90/347,232.59 = 81,679.25/x
  3. Step 3: Cross multiply
    231,469.90x = 347,232.59 × 81,679.25
  4. Step 4: Simplify right side
    231,469.90x = 28,361,697,118.36
  5. Step 5: Solve for x
    x = 28,361,697,118.36/231,469.90
  6. Step 6: Final answer
    x = 122,528.66

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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.