Home / 231,720.20-347,321.10-131,928.20

Finding the Fourth Proportional to 231,720.20, 347,321.10 and 131,928.20

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Solution

The fourth proportional to 231,720.20, 347,321.10 and 131,928.20 is: 197,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,720.20 : 347,321.10 = 131,928.20 : x
  2. Step 2: Convert to fraction form
    231,720.20/347,321.10 = 131,928.20/x
  3. Step 3: Cross multiply
    231,720.20x = 347,321.10 × 131,928.20
  4. Step 4: Simplify right side
    231,720.20x = 45,821,447,545.02
  5. Step 5: Solve for x
    x = 45,821,447,545.02/231,720.20
  6. Step 6: Final answer
    x = 197,744.73

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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.