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Finding the Fourth Proportional to 267,427.20, 401,140.80 and 89,915.70

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Solution

The fourth proportional to 267,427.20, 401,140.80 and 89,915.70 is: 134,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,427.20 : 401,140.80 = 89,915.70 : x
  2. Step 2: Convert to fraction form
    267,427.20/401,140.80 = 89,915.70/x
  3. Step 3: Cross multiply
    267,427.20x = 401,140.80 × 89,915.70
  4. Step 4: Simplify right side
    267,427.20x = 36,068,855,830.56
  5. Step 5: Solve for x
    x = 36,068,855,830.56/267,427.20
  6. Step 6: Final answer
    x = 134,873.55

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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.