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Finding the Fourth Proportional to 267,871.60, 401,807.40 and 80,858.80

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Solution

The fourth proportional to 267,871.60, 401,807.40 and 80,858.80 is: 121,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,871.60 : 401,807.40 = 80,858.80 : x
  2. Step 2: Convert to fraction form
    267,871.60/401,807.40 = 80,858.80/x
  3. Step 3: Cross multiply
    267,871.60x = 401,807.40 × 80,858.80
  4. Step 4: Simplify right side
    267,871.60x = 32,489,664,195.12
  5. Step 5: Solve for x
    x = 32,489,664,195.12/267,871.60
  6. Step 6: Final answer
    x = 121,288.20

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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.