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Finding the Fourth Proportional to 221,584.88, 332,420.88 and 81,344.72

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Solution

The fourth proportional to 221,584.88, 332,420.88 and 81,344.72 is: 122,033.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,584.88 : 332,420.88 = 81,344.72 : x
  2. Step 2: Convert to fraction form
    221,584.88/332,420.88 = 81,344.72/x
  3. Step 3: Cross multiply
    221,584.88x = 332,420.88 × 81,344.72
  4. Step 4: Simplify right side
    221,584.88x = 27,040,683,405.75
  5. Step 5: Solve for x
    x = 27,040,683,405.75/221,584.88
  6. Step 6: Final answer
    x = 122,033.07

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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.