Home / 327,556.38-491,337.81-138,048.78

Finding the Fourth Proportional to 327,556.38, 491,337.81 and 138,048.78

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Solution

The fourth proportional to 327,556.38, 491,337.81 and 138,048.78 is: 207,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,556.38 : 491,337.81 = 138,048.78 : x
  2. Step 2: Convert to fraction form
    327,556.38/491,337.81 = 138,048.78/x
  3. Step 3: Cross multiply
    327,556.38x = 491,337.81 × 138,048.78
  4. Step 4: Simplify right side
    327,556.38x = 67,828,585,238.37
  5. Step 5: Solve for x
    x = 67,828,585,238.37/327,556.38
  6. Step 6: Final answer
    x = 207,074.54

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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.