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Finding the Fourth Proportional to 221,480.62, 332,273.78 and 71,721.07

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Solution

The fourth proportional to 221,480.62, 332,273.78 and 71,721.07 is: 107,598.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,480.62 : 332,273.78 = 71,721.07 : x
  2. Step 2: Convert to fraction form
    221,480.62/332,273.78 = 71,721.07/x
  3. Step 3: Cross multiply
    221,480.62x = 332,273.78 × 71,721.07
  4. Step 4: Simplify right side
    221,480.62x = 23,831,031,034.54
  5. Step 5: Solve for x
    x = 23,831,031,034.54/221,480.62
  6. Step 6: Final answer
    x = 107,598.72

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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.