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Finding the Fourth Proportional to 221,741.88, 332,645.76 and 81,489.60

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Solution

The fourth proportional to 221,741.88, 332,645.76 and 81,489.60 is: 122,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,741.88 : 332,645.76 = 81,489.60 : x
  2. Step 2: Convert to fraction form
    221,741.88/332,645.76 = 81,489.60/x
  3. Step 3: Cross multiply
    221,741.88x = 332,645.76 × 81,489.60
  4. Step 4: Simplify right side
    221,741.88x = 27,107,169,924.10
  5. Step 5: Solve for x
    x = 27,107,169,924.10/221,741.88
  6. Step 6: Final answer
    x = 122,246.51

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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.