Home / 218,976.80-328,474.92-85,845.20

Finding the Fourth Proportional to 218,976.80, 328,474.92 and 85,845.20

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Solution

The fourth proportional to 218,976.80, 328,474.92 and 85,845.20 is: 128,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,976.80 : 328,474.92 = 85,845.20 : x
  2. Step 2: Convert to fraction form
    218,976.80/328,474.92 = 85,845.20/x
  3. Step 3: Cross multiply
    218,976.80x = 328,474.92 × 85,845.20
  4. Step 4: Simplify right side
    218,976.80x = 28,197,995,202.38
  5. Step 5: Solve for x
    x = 28,197,995,202.38/218,976.80
  6. Step 6: Final answer
    x = 128,771.61

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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.