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Finding the Fourth Proportional to 221,291.78, 331,937.41 and 88,265.46

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Solution

The fourth proportional to 221,291.78, 331,937.41 and 88,265.46 is: 132,398.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,291.78 : 331,937.41 = 88,265.46 : x
  2. Step 2: Convert to fraction form
    221,291.78/331,937.41 = 88,265.46/x
  3. Step 3: Cross multiply
    221,291.78x = 331,937.41 × 88,265.46
  4. Step 4: Simplify right side
    221,291.78x = 29,298,609,374.46
  5. Step 5: Solve for x
    x = 29,298,609,374.46/221,291.78
  6. Step 6: Final answer
    x = 132,398.09

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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.