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Finding the Fourth Proportional to 267,761.60, 401,620.64 and 90,264.80

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Solution

The fourth proportional to 267,761.60, 401,620.64 and 90,264.80 is: 135,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,761.60 : 401,620.64 = 90,264.80 : x
  2. Step 2: Convert to fraction form
    267,761.60/401,620.64 = 90,264.80/x
  3. Step 3: Cross multiply
    267,761.60x = 401,620.64 × 90,264.80
  4. Step 4: Simplify right side
    267,761.60x = 36,252,206,745.47
  5. Step 5: Solve for x
    x = 36,252,206,745.47/267,761.60
  6. Step 6: Final answer
    x = 135,389.86

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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.