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Finding the Fourth Proportional to 221,098.52, 331,644.69 and 126,126.02

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Solution

The fourth proportional to 221,098.52, 331,644.69 and 126,126.02 is: 189,187.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,098.52 : 331,644.69 = 126,126.02 : x
  2. Step 2: Convert to fraction form
    221,098.52/331,644.69 = 126,126.02/x
  3. Step 3: Cross multiply
    221,098.52x = 331,644.69 × 126,126.02
  4. Step 4: Simplify right side
    221,098.52x = 41,829,022,514.98
  5. Step 5: Solve for x
    x = 41,829,022,514.98/221,098.52
  6. Step 6: Final answer
    x = 189,187.26

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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.