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Finding the Fourth Proportional to 267,221.12, 400,868.58 and 89,778.87

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Solution

The fourth proportional to 267,221.12, 400,868.58 and 89,778.87 is: 134,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,221.12 : 400,868.58 = 89,778.87 : x
  2. Step 2: Convert to fraction form
    267,221.12/400,868.58 = 89,778.87/x
  3. Step 3: Cross multiply
    267,221.12x = 400,868.58 × 89,778.87
  4. Step 4: Simplify right side
    267,221.12x = 35,989,528,130.90
  5. Step 5: Solve for x
    x = 35,989,528,130.90/267,221.12
  6. Step 6: Final answer
    x = 134,680.70

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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.