Home / 218,524.20-327,786.29-78,381.24

Finding the Fourth Proportional to 218,524.20, 327,786.29 and 78,381.24

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Solution

The fourth proportional to 218,524.20, 327,786.29 and 78,381.24 is: 117,571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,524.20 : 327,786.29 = 78,381.24 : x
  2. Step 2: Convert to fraction form
    218,524.20/327,786.29 = 78,381.24/x
  3. Step 3: Cross multiply
    218,524.20x = 327,786.29 × 78,381.24
  4. Step 4: Simplify right side
    218,524.20x = 25,692,295,865.20
  5. Step 5: Solve for x
    x = 25,692,295,865.20/218,524.20
  6. Step 6: Final answer
    x = 117,571.86

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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.