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Finding the Fourth Proportional to 221,469.12, 331,999.02 and 88,317

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Solution

The fourth proportional to 221,469.12, 331,999.02 and 88,317 is: 132,393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,469.12 : 331,999.02 = 88,317 : x
  2. Step 2: Convert to fraction form
    221,469.12/331,999.02 = 88,317/x
  3. Step 3: Cross multiply
    221,469.12x = 331,999.02 × 88,317
  4. Step 4: Simplify right side
    221,469.12x = 29,321,157,449.34
  5. Step 5: Solve for x
    x = 29,321,157,449.34/221,469.12
  6. Step 6: Final answer
    x = 132,393.89

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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.