Home / 220,198.80-329,909.40-136,995.60

Finding the Fourth Proportional to 220,198.80, 329,909.40 and 136,995.60

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Solution

The fourth proportional to 220,198.80, 329,909.40 and 136,995.60 is: 205,251.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,198.80 : 329,909.40 = 136,995.60 : x
  2. Step 2: Convert to fraction form
    220,198.80/329,909.40 = 136,995.60/x
  3. Step 3: Cross multiply
    220,198.80x = 329,909.40 × 136,995.60
  4. Step 4: Simplify right side
    220,198.80x = 45,196,136,198.64
  5. Step 5: Solve for x
    x = 45,196,136,198.64/220,198.80
  6. Step 6: Final answer
    x = 205,251.51

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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.