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Finding the Fourth Proportional to 221,963.21, 332,947.89 and 72,204.29

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Solution

The fourth proportional to 221,963.21, 332,947.89 and 72,204.29 is: 108,307.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,963.21 : 332,947.89 = 72,204.29 : x
  2. Step 2: Convert to fraction form
    221,963.21/332,947.89 = 72,204.29/x
  3. Step 3: Cross multiply
    221,963.21x = 332,947.89 × 72,204.29
  4. Step 4: Simplify right side
    221,963.21x = 24,040,264,854.92
  5. Step 5: Solve for x
    x = 24,040,264,854.92/221,963.21
  6. Step 6: Final answer
    x = 108,307.43

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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.