Home / 327,189.75-490,790.78-102,545.21

Finding the Fourth Proportional to 327,189.75, 490,790.78 and 102,545.21

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Solution

The fourth proportional to 327,189.75, 490,790.78 and 102,545.21 is: 153,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,189.75 : 490,790.78 = 102,545.21 : x
  2. Step 2: Convert to fraction form
    327,189.75/490,790.78 = 102,545.21/x
  3. Step 3: Cross multiply
    327,189.75x = 490,790.78 × 102,545.21
  4. Step 4: Simplify right side
    327,189.75x = 50,328,244,699.96
  5. Step 5: Solve for x
    x = 50,328,244,699.96/327,189.75
  6. Step 6: Final answer
    x = 153,819.75

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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.