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Finding the Fourth Proportional to 221,555.70, 331,896.15 and 132,544.80

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Solution

The fourth proportional to 221,555.70, 331,896.15 and 132,544.80 is: 198,555.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,555.70 : 331,896.15 = 132,544.80 : x
  2. Step 2: Convert to fraction form
    221,555.70/331,896.15 = 132,544.80/x
  3. Step 3: Cross multiply
    221,555.70x = 331,896.15 × 132,544.80
  4. Step 4: Simplify right side
    221,555.70x = 43,991,108,822.52
  5. Step 5: Solve for x
    x = 43,991,108,822.52/221,555.70
  6. Step 6: Final answer
    x = 198,555.53

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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.