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Finding the Fourth Proportional to 218,717.60, 328,149.30 and 195,200.60

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Solution

The fourth proportional to 218,717.60, 328,149.30 and 195,200.60 is: 292,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.60 : 328,149.30 = 195,200.60 : x
  2. Step 2: Convert to fraction form
    218,717.60/328,149.30 = 195,200.60/x
  3. Step 3: Cross multiply
    218,717.60x = 328,149.30 × 195,200.60
  4. Step 4: Simplify right side
    218,717.60x = 64,054,940,249.58
  5. Step 5: Solve for x
    x = 64,054,940,249.58/218,717.60
  6. Step 6: Final answer
    x = 292,865.96

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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.