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Finding the Fourth Proportional to 267,771.78, 401,659.05 and 90,280.33

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Solution

The fourth proportional to 267,771.78, 401,659.05 and 90,280.33 is: 135,420.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,771.78 : 401,659.05 = 90,280.33 : x
  2. Step 2: Convert to fraction form
    267,771.78/401,659.05 = 90,280.33/x
  3. Step 3: Cross multiply
    267,771.78x = 401,659.05 × 90,280.33
  4. Step 4: Simplify right side
    267,771.78x = 36,261,910,408.06
  5. Step 5: Solve for x
    x = 36,261,910,408.06/267,771.78
  6. Step 6: Final answer
    x = 135,420.96

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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.