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Finding the Fourth Proportional to 206,049.40, 308,843.70 and 87,700.60

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Solution

The fourth proportional to 206,049.40, 308,843.70 and 87,700.60 is: 131,452.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,049.40 : 308,843.70 = 87,700.60 : x
  2. Step 2: Convert to fraction form
    206,049.40/308,843.70 = 87,700.60/x
  3. Step 3: Cross multiply
    206,049.40x = 308,843.70 × 87,700.60
  4. Step 4: Simplify right side
    206,049.40x = 27,085,777,796.22
  5. Step 5: Solve for x
    x = 27,085,777,796.22/206,049.40
  6. Step 6: Final answer
    x = 131,452.84

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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.