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Finding the Fourth Proportional to 221,640.44, 332,507.37 and 71,869.06

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Solution

The fourth proportional to 221,640.44, 332,507.37 and 71,869.06 is: 107,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,640.44 : 332,507.37 = 71,869.06 : x
  2. Step 2: Convert to fraction form
    221,640.44/332,507.37 = 71,869.06/x
  3. Step 3: Cross multiply
    221,640.44x = 332,507.37 × 71,869.06
  4. Step 4: Simplify right side
    221,640.44x = 23,896,992,124.97
  5. Step 5: Solve for x
    x = 23,896,992,124.97/221,640.44
  6. Step 6: Final answer
    x = 107,818.74

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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.