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Finding the Fourth Proportional to 327,189.43, 490,795.08 and 90,512.29

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Solution

The fourth proportional to 327,189.43, 490,795.08 and 90,512.29 is: 135,771.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,189.43 : 490,795.08 = 90,512.29 : x
  2. Step 2: Convert to fraction form
    327,189.43/490,795.08 = 90,512.29/x
  3. Step 3: Cross multiply
    327,189.43x = 490,795.08 × 90,512.29
  4. Step 4: Simplify right side
    327,189.43x = 44,422,987,394.74
  5. Step 5: Solve for x
    x = 44,422,987,394.74/327,189.43
  6. Step 6: Final answer
    x = 135,771.46

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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.