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Finding the Fourth Proportional to 266,723.40, 400,959.90 and 188,380.20

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Solution

The fourth proportional to 266,723.40, 400,959.90 and 188,380.20 is: 283,188.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,723.40 : 400,959.90 = 188,380.20 : x
  2. Step 2: Convert to fraction form
    266,723.40/400,959.90 = 188,380.20/x
  3. Step 3: Cross multiply
    266,723.40x = 400,959.90 × 188,380.20
  4. Step 4: Simplify right side
    266,723.40x = 75,532,906,153.98
  5. Step 5: Solve for x
    x = 75,532,906,153.98/266,723.40
  6. Step 6: Final answer
    x = 283,188.15

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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.