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Finding the Fourth Proportional to 221,744.82, 332,748.45 and 81,601.86

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Solution

The fourth proportional to 221,744.82, 332,748.45 and 81,601.86 is: 122,451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,744.82 : 332,748.45 = 81,601.86 : x
  2. Step 2: Convert to fraction form
    221,744.82/332,748.45 = 81,601.86/x
  3. Step 3: Cross multiply
    221,744.82x = 332,748.45 × 81,601.86
  4. Step 4: Simplify right side
    221,744.82x = 27,152,892,432.12
  5. Step 5: Solve for x
    x = 27,152,892,432.12/221,744.82
  6. Step 6: Final answer
    x = 122,451.08

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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.