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Finding the Fourth Proportional to 221,173.92, 331,760.79 and 54,961.92

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Solution

The fourth proportional to 221,173.92, 331,760.79 and 54,961.92 is: 82,442.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,173.92 : 331,760.79 = 54,961.92 : x
  2. Step 2: Convert to fraction form
    221,173.92/331,760.79 = 54,961.92/x
  3. Step 3: Cross multiply
    221,173.92x = 331,760.79 × 54,961.92
  4. Step 4: Simplify right side
    221,173.92x = 18,234,209,999.12
  5. Step 5: Solve for x
    x = 18,234,209,999.12/221,173.92
  6. Step 6: Final answer
    x = 82,442.86

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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.