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Finding the Fourth Proportional to 266,782.70, 400,144.57 and 67,103.16

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Solution

The fourth proportional to 266,782.70, 400,144.57 and 67,103.16 is: 100,647.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,782.70 : 400,144.57 = 67,103.16 : x
  2. Step 2: Convert to fraction form
    266,782.70/400,144.57 = 67,103.16/x
  3. Step 3: Cross multiply
    266,782.70x = 400,144.57 × 67,103.16
  4. Step 4: Simplify right side
    266,782.70x = 26,850,965,936.44
  5. Step 5: Solve for x
    x = 26,850,965,936.44/266,782.70
  6. Step 6: Final answer
    x = 100,647.33

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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.