Home / 327,728.35-491,659.98-138,189.25

Finding the Fourth Proportional to 327,728.35, 491,659.98 and 138,189.25

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Solution

The fourth proportional to 327,728.35, 491,659.98 and 138,189.25 is: 207,312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,728.35 : 491,659.98 = 138,189.25 : x
  2. Step 2: Convert to fraction form
    327,728.35/491,659.98 = 138,189.25/x
  3. Step 3: Cross multiply
    327,728.35x = 491,659.98 × 138,189.25
  4. Step 4: Simplify right side
    327,728.35x = 67,942,123,891.22
  5. Step 5: Solve for x
    x = 67,942,123,891.22/327,728.35
  6. Step 6: Final answer
    x = 207,312.32

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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.