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Finding the Fourth Proportional to 221,132.70, 331,805.70 and 108,751.95

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Solution

The fourth proportional to 221,132.70, 331,805.70 and 108,751.95 is: 163,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,132.70 : 331,805.70 = 108,751.95 : x
  2. Step 2: Convert to fraction form
    221,132.70/331,805.70 = 108,751.95/x
  3. Step 3: Cross multiply
    221,132.70x = 331,805.70 × 108,751.95
  4. Step 4: Simplify right side
    221,132.70x = 36,084,516,896.12
  5. Step 5: Solve for x
    x = 36,084,516,896.12/221,132.70
  6. Step 6: Final answer
    x = 163,180.37

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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.