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Finding the Fourth Proportional to 221,568.80, 332,282.12 and 71,772.96

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Solution

The fourth proportional to 221,568.80, 332,282.12 and 71,772.96 is: 107,636.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,568.80 : 332,282.12 = 71,772.96 : x
  2. Step 2: Convert to fraction form
    221,568.80/332,282.12 = 71,772.96/x
  3. Step 3: Cross multiply
    221,568.80x = 332,282.12 × 71,772.96
  4. Step 4: Simplify right side
    221,568.80x = 23,848,871,307.48
  5. Step 5: Solve for x
    x = 23,848,871,307.48/221,568.80
  6. Step 6: Final answer
    x = 107,636.41

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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.