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Finding the Fourth Proportional to 267,420.52, 400,911.90 and 134,139.88

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Solution

The fourth proportional to 267,420.52, 400,911.90 and 134,139.88 is: 201,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,420.52 : 400,911.90 = 134,139.88 : x
  2. Step 2: Convert to fraction form
    267,420.52/400,911.90 = 134,139.88/x
  3. Step 3: Cross multiply
    267,420.52x = 400,911.90 × 134,139.88
  4. Step 4: Simplify right side
    267,420.52x = 53,778,274,156.57
  5. Step 5: Solve for x
    x = 53,778,274,156.57/267,420.52
  6. Step 6: Final answer
    x = 201,100.03

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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.