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Finding the Fourth Proportional to 221,062.73, 331,561.71 and 108,712.75

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Solution

The fourth proportional to 221,062.73, 331,561.71 and 108,712.75 is: 163,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,062.73 : 331,561.71 = 108,712.75 : x
  2. Step 2: Convert to fraction form
    221,062.73/331,561.71 = 108,712.75/x
  3. Step 3: Cross multiply
    221,062.73x = 331,561.71 × 108,712.75
  4. Step 4: Simplify right side
    221,062.73x = 36,044,985,288.80
  5. Step 5: Solve for x
    x = 36,044,985,288.80/221,062.73
  6. Step 6: Final answer
    x = 163,053.20

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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.