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Finding the Fourth Proportional to 267,647.22, 401,471.54 and 90,278.69

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Solution

The fourth proportional to 267,647.22, 401,471.54 and 90,278.69 is: 135,418.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,647.22 : 401,471.54 = 90,278.69 : x
  2. Step 2: Convert to fraction form
    267,647.22/401,471.54 = 90,278.69/x
  3. Step 3: Cross multiply
    267,647.22x = 401,471.54 × 90,278.69
  4. Step 4: Simplify right side
    267,647.22x = 36,244,324,703.48
  5. Step 5: Solve for x
    x = 36,244,324,703.48/267,647.22
  6. Step 6: Final answer
    x = 135,418.27

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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.