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Finding the Fourth Proportional to 221,795.57, 332,825.12 and 81,652.61

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Solution

The fourth proportional to 221,795.57, 332,825.12 and 81,652.61 is: 122,527.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,795.57 : 332,825.12 = 81,652.61 : x
  2. Step 2: Convert to fraction form
    221,795.57/332,825.12 = 81,652.61/x
  3. Step 3: Cross multiply
    221,795.57x = 332,825.12 × 81,652.61
  4. Step 4: Simplify right side
    221,795.57x = 27,176,039,313.30
  5. Step 5: Solve for x
    x = 27,176,039,313.30/221,795.57
  6. Step 6: Final answer
    x = 122,527.42

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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.