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Finding the Fourth Proportional to 267,869.92, 401,936 and 107,939.20

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Solution

The fourth proportional to 267,869.92, 401,936 and 107,939.20 is: 161,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,869.92 : 401,936 = 107,939.20 : x
  2. Step 2: Convert to fraction form
    267,869.92/401,936 = 107,939.20/x
  3. Step 3: Cross multiply
    267,869.92x = 401,936 × 107,939.20
  4. Step 4: Simplify right side
    267,869.92x = 43,384,650,291.20
  5. Step 5: Solve for x
    x = 43,384,650,291.20/267,869.92
  6. Step 6: Final answer
    x = 161,961.64

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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.