Home / 279,839.66-419,819.26-90,310.82

Finding the Fourth Proportional to 279,839.66, 419,819.26 and 90,310.82

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Solution

The fourth proportional to 279,839.66, 419,819.26 and 90,310.82 is: 135,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,839.66 : 419,819.26 = 90,310.82 : x
  2. Step 2: Convert to fraction form
    279,839.66/419,819.26 = 90,310.82/x
  3. Step 3: Cross multiply
    279,839.66x = 419,819.26 × 90,310.82
  4. Step 4: Simplify right side
    279,839.66x = 37,914,221,622.39
  5. Step 5: Solve for x
    x = 37,914,221,622.39/279,839.66
  6. Step 6: Final answer
    x = 135,485.52

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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.