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Finding the Fourth Proportional to 223,405.38, 335,104.56 and 81,248.76

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Solution

The fourth proportional to 223,405.38, 335,104.56 and 81,248.76 is: 121,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,405.38 : 335,104.56 = 81,248.76 : x
  2. Step 2: Convert to fraction form
    223,405.38/335,104.56 = 81,248.76/x
  3. Step 3: Cross multiply
    223,405.38x = 335,104.56 × 81,248.76
  4. Step 4: Simplify right side
    223,405.38x = 27,226,829,970.35
  5. Step 5: Solve for x
    x = 27,226,829,970.35/223,405.38
  6. Step 6: Final answer
    x = 121,871.86

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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.