Home / 219,805.40-329,708.10-131,231.90

Finding the Fourth Proportional to 219,805.40, 329,708.10 and 131,231.90

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Solution

The fourth proportional to 219,805.40, 329,708.10 and 131,231.90 is: 196,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,805.40 : 329,708.10 = 131,231.90 : x
  2. Step 2: Convert to fraction form
    219,805.40/329,708.10 = 131,231.90/x
  3. Step 3: Cross multiply
    219,805.40x = 329,708.10 × 131,231.90
  4. Step 4: Simplify right side
    219,805.40x = 43,268,220,408.39
  5. Step 5: Solve for x
    x = 43,268,220,408.39/219,805.40
  6. Step 6: Final answer
    x = 196,847.85

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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.