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Finding the Fourth Proportional to 218,660.82, 328,037.25 and 123,936.39

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Solution

The fourth proportional to 218,660.82, 328,037.25 and 123,936.39 is: 185,930.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,660.82 : 328,037.25 = 123,936.39 : x
  2. Step 2: Convert to fraction form
    218,660.82/328,037.25 = 123,936.39/x
  3. Step 3: Cross multiply
    218,660.82x = 328,037.25 × 123,936.39
  4. Step 4: Simplify right side
    218,660.82x = 40,655,752,550.53
  5. Step 5: Solve for x
    x = 40,655,752,550.53/218,660.82
  6. Step 6: Final answer
    x = 185,930.67

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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.