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Finding the Fourth Proportional to 267,986.60, 401,979.90 and 68,306.60

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Solution

The fourth proportional to 267,986.60, 401,979.90 and 68,306.60 is: 102,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,986.60 : 401,979.90 = 68,306.60 : x
  2. Step 2: Convert to fraction form
    267,986.60/401,979.90 = 68,306.60/x
  3. Step 3: Cross multiply
    267,986.60x = 401,979.90 × 68,306.60
  4. Step 4: Simplify right side
    267,986.60x = 27,457,880,237.34
  5. Step 5: Solve for x
    x = 27,457,880,237.34/267,986.60
  6. Step 6: Final answer
    x = 102,459.90

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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.