Home / 220,997.20-331,495.80-137,016.40

Finding the Fourth Proportional to 220,997.20, 331,495.80 and 137,016.40

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Solution

The fourth proportional to 220,997.20, 331,495.80 and 137,016.40 is: 205,524.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,997.20 : 331,495.80 = 137,016.40 : x
  2. Step 2: Convert to fraction form
    220,997.20/331,495.80 = 137,016.40/x
  3. Step 3: Cross multiply
    220,997.20x = 331,495.80 × 137,016.40
  4. Step 4: Simplify right side
    220,997.20x = 45,420,361,131.12
  5. Step 5: Solve for x
    x = 45,420,361,131.12/220,997.20
  6. Step 6: Final answer
    x = 205,524.60

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1.5x scale

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.