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Finding the Fourth Proportional to 221,750.80, 332,553.30 and 81,491.20

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Solution

The fourth proportional to 221,750.80, 332,553.30 and 81,491.20 is: 122,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,750.80 : 332,553.30 = 81,491.20 : x
  2. Step 2: Convert to fraction form
    221,750.80/332,553.30 = 81,491.20/x
  3. Step 3: Cross multiply
    221,750.80x = 332,553.30 × 81,491.20
  4. Step 4: Simplify right side
    221,750.80x = 27,100,167,480.96
  5. Step 5: Solve for x
    x = 27,100,167,480.96/221,750.80
  6. Step 6: Final answer
    x = 122,210.01

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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.