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Finding the Fourth Proportional to 218,785.39, 328,178.05 and 52,573.39

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Solution

The fourth proportional to 218,785.39, 328,178.05 and 52,573.39 is: 78,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,785.39 : 328,178.05 = 52,573.39 : x
  2. Step 2: Convert to fraction form
    218,785.39/328,178.05 = 52,573.39/x
  3. Step 3: Cross multiply
    218,785.39x = 328,178.05 × 52,573.39
  4. Step 4: Simplify right side
    218,785.39x = 17,253,431,660.21
  5. Step 5: Solve for x
    x = 17,253,431,660.21/218,785.39
  6. Step 6: Final answer
    x = 78,860.07

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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.