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Finding the Fourth Proportional to 327,238.68, 490,868.73 and 90,561.54

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Solution

The fourth proportional to 327,238.68, 490,868.73 and 90,561.54 is: 135,845.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,238.68 : 490,868.73 = 90,561.54 : x
  2. Step 2: Convert to fraction form
    327,238.68/490,868.73 = 90,561.54/x
  3. Step 3: Cross multiply
    327,238.68x = 490,868.73 × 90,561.54
  4. Step 4: Simplify right side
    327,238.68x = 44,453,828,126.64
  5. Step 5: Solve for x
    x = 44,453,828,126.64/327,238.68
  6. Step 6: Final answer
    x = 135,845.27

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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.