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Finding the Fourth Proportional to 266,807.71, 400,181.97 and 67,128.13

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Solution

The fourth proportional to 266,807.71, 400,181.97 and 67,128.13 is: 100,684.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,807.71 : 400,181.97 = 67,128.13 : x
  2. Step 2: Convert to fraction form
    266,807.71/400,181.97 = 67,128.13/x
  3. Step 3: Cross multiply
    266,807.71x = 400,181.97 × 67,128.13
  4. Step 4: Simplify right side
    266,807.71x = 26,863,467,305.82
  5. Step 5: Solve for x
    x = 26,863,467,305.82/266,807.71
  6. Step 6: Final answer
    x = 100,684.75

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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.