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Finding the Fourth Proportional to 218,660.57, 328,036.88 and 123,936.14

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Solution

The fourth proportional to 218,660.57, 328,036.88 and 123,936.14 is: 185,930.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,660.57 : 328,036.88 = 123,936.14 : x
  2. Step 2: Convert to fraction form
    218,660.57/328,036.88 = 123,936.14/x
  3. Step 3: Cross multiply
    218,660.57x = 328,036.88 × 123,936.14
  4. Step 4: Simplify right side
    218,660.57x = 40,655,622,424.98
  5. Step 5: Solve for x
    x = 40,655,622,424.98/218,660.57
  6. Step 6: Final answer
    x = 185,930.29

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1.5x scale

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.