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Finding the Fourth Proportional to 267,903.69, 401,855.52 and 80,915.19

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Solution

The fourth proportional to 267,903.69, 401,855.52 and 80,915.19 is: 121,372.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,903.69 : 401,855.52 = 80,915.19 : x
  2. Step 2: Convert to fraction form
    267,903.69/401,855.52 = 80,915.19/x
  3. Step 3: Cross multiply
    267,903.69x = 401,855.52 × 80,915.19
  4. Step 4: Simplify right side
    267,903.69x = 32,516,215,753.35
  5. Step 5: Solve for x
    x = 32,516,215,753.35/267,903.69
  6. Step 6: Final answer
    x = 121,372.78

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1.5x scale

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.