Home / 218,538.40-327,937.20-143,872.60

Finding the Fourth Proportional to 218,538.40, 327,937.20 and 143,872.60

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Solution

The fourth proportional to 218,538.40, 327,937.20 and 143,872.60 is: 215,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,538.40 : 327,937.20 = 143,872.60 : x
  2. Step 2: Convert to fraction form
    218,538.40/327,937.20 = 143,872.60/x
  3. Step 3: Cross multiply
    218,538.40x = 327,937.20 × 143,872.60
  4. Step 4: Simplify right side
    218,538.40x = 47,181,177,600.72
  5. Step 5: Solve for x
    x = 47,181,177,600.72/218,538.40
  6. Step 6: Final answer
    x = 215,894.22

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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.