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Finding the Fourth Proportional to 218,914.59, 328,371.89 and 169,067.39

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Solution

The fourth proportional to 218,914.59, 328,371.89 and 169,067.39 is: 253,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,914.59 : 328,371.89 = 169,067.39 : x
  2. Step 2: Convert to fraction form
    218,914.59/328,371.89 = 169,067.39/x
  3. Step 3: Cross multiply
    218,914.59x = 328,371.89 × 169,067.39
  4. Step 4: Simplify right side
    218,914.59x = 55,516,978,367.26
  5. Step 5: Solve for x
    x = 55,516,978,367.26/218,914.59
  6. Step 6: Final answer
    x = 253,601.09

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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.