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Finding the Fourth Proportional to 221,750.20, 332,625.30 and 81,490.60

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Solution

The fourth proportional to 221,750.20, 332,625.30 and 81,490.60 is: 122,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,750.20 : 332,625.30 = 81,490.60 : x
  2. Step 2: Convert to fraction form
    221,750.20/332,625.30 = 81,490.60/x
  3. Step 3: Cross multiply
    221,750.20x = 332,625.30 × 81,490.60
  4. Step 4: Simplify right side
    221,750.20x = 27,105,835,272.18
  5. Step 5: Solve for x
    x = 27,105,835,272.18/221,750.20
  6. Step 6: Final answer
    x = 122,235.90

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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.