Home / 318,144.22-439,034.31-172,945.19

Finding the Fourth Proportional to 318,144.22, 439,034.31 and 172,945.19

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Solution

The fourth proportional to 318,144.22, 439,034.31 and 172,945.19 is: 238,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,144.22 : 439,034.31 = 172,945.19 : x
  2. Step 2: Convert to fraction form
    318,144.22/439,034.31 = 172,945.19/x
  3. Step 3: Cross multiply
    318,144.22x = 439,034.31 × 172,945.19
  4. Step 4: Simplify right side
    318,144.22x = 75,928,873,257.05
  5. Step 5: Solve for x
    x = 75,928,873,257.05/318,144.22
  6. Step 6: Final answer
    x = 238,661.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.