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Finding the Fourth Proportional to 266,411.50, 399,814.49 and 126,170.53

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Solution

The fourth proportional to 266,411.50, 399,814.49 and 126,170.53 is: 189,349.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,411.50 : 399,814.49 = 126,170.53 : x
  2. Step 2: Convert to fraction form
    266,411.50/399,814.49 = 126,170.53/x
  3. Step 3: Cross multiply
    266,411.50x = 399,814.49 × 126,170.53
  4. Step 4: Simplify right side
    266,411.50x = 50,444,806,104.98
  5. Step 5: Solve for x
    x = 50,444,806,104.98/266,411.50
  6. Step 6: Final answer
    x = 189,349.21

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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.