Home / 220,909.76-331,126.32-108,459.20

Finding the Fourth Proportional to 220,909.76, 331,126.32 and 108,459.20

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Solution

The fourth proportional to 220,909.76, 331,126.32 and 108,459.20 is: 162,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,909.76 : 331,126.32 = 108,459.20 : x
  2. Step 2: Convert to fraction form
    220,909.76/331,126.32 = 108,459.20/x
  3. Step 3: Cross multiply
    220,909.76x = 331,126.32 × 108,459.20
  4. Step 4: Simplify right side
    220,909.76x = 35,913,695,766.14
  5. Step 5: Solve for x
    x = 35,913,695,766.14/220,909.76
  6. Step 6: Final answer
    x = 162,571.79

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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.