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Finding the Fourth Proportional to 267,438.56, 401,218.38 and 89,940.69

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Solution

The fourth proportional to 267,438.56, 401,218.38 and 89,940.69 is: 134,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,438.56 : 401,218.38 = 89,940.69 : x
  2. Step 2: Convert to fraction form
    267,438.56/401,218.38 = 89,940.69/x
  3. Step 3: Cross multiply
    267,438.56x = 401,218.38 × 89,940.69
  4. Step 4: Simplify right side
    267,438.56x = 36,085,857,937.88
  5. Step 5: Solve for x
    x = 36,085,857,937.88/267,438.56
  6. Step 6: Final answer
    x = 134,931.40

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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.