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Finding the Fourth Proportional to 266,381.40, 399,571.02 and 126,238.44

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Solution

The fourth proportional to 266,381.40, 399,571.02 and 126,238.44 is: 189,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,381.40 : 399,571.02 = 126,238.44 : x
  2. Step 2: Convert to fraction form
    266,381.40/399,571.02 = 126,238.44/x
  3. Step 3: Cross multiply
    266,381.40x = 399,571.02 × 126,238.44
  4. Step 4: Simplify right side
    266,381.40x = 50,441,222,234.01
  5. Step 5: Solve for x
    x = 50,441,222,234.01/266,381.40
  6. Step 6: Final answer
    x = 189,357.15

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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.