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Finding the Fourth Proportional to 221,686.70, 332,530.05 and 133,040.30

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Solution

The fourth proportional to 221,686.70, 332,530.05 and 133,040.30 is: 199,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,686.70 : 332,530.05 = 133,040.30 : x
  2. Step 2: Convert to fraction form
    221,686.70/332,530.05 = 133,040.30/x
  3. Step 3: Cross multiply
    221,686.70x = 332,530.05 × 133,040.30
  4. Step 4: Simplify right side
    221,686.70x = 44,239,897,611.02
  5. Step 5: Solve for x
    x = 44,239,897,611.02/221,686.70
  6. Step 6: Final answer
    x = 199,560.45

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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.