Home / 218,826.20-328,239.26-69,171.54

Finding the Fourth Proportional to 218,826.20, 328,239.26 and 69,171.54

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Solution

The fourth proportional to 218,826.20, 328,239.26 and 69,171.54 is: 103,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,826.20 : 328,239.26 = 69,171.54 : x
  2. Step 2: Convert to fraction form
    218,826.20/328,239.26 = 69,171.54/x
  3. Step 3: Cross multiply
    218,826.20x = 328,239.26 × 69,171.54
  4. Step 4: Simplify right side
    218,826.20x = 22,704,814,756.80
  5. Step 5: Solve for x
    x = 22,704,814,756.80/218,826.20
  6. Step 6: Final answer
    x = 103,757.30

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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.