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Finding the Fourth Proportional to 266,865.30, 400,298.36 and 67,185.72

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Solution

The fourth proportional to 266,865.30, 400,298.36 and 67,185.72 is: 100,778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,865.30 : 400,298.36 = 67,185.72 : x
  2. Step 2: Convert to fraction form
    266,865.30/400,298.36 = 67,185.72/x
  3. Step 3: Cross multiply
    266,865.30x = 400,298.36 × 67,185.72
  4. Step 4: Simplify right side
    266,865.30x = 26,894,333,195.49
  5. Step 5: Solve for x
    x = 26,894,333,195.49/266,865.30
  6. Step 6: Final answer
    x = 100,778.68

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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.