Home / 331,939.09-498,205.92-172,129.51

Finding the Fourth Proportional to 331,939.09, 498,205.92 and 172,129.51

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Solution

The fourth proportional to 331,939.09, 498,205.92 and 172,129.51 is: 258,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,939.09 : 498,205.92 = 172,129.51 : x
  2. Step 2: Convert to fraction form
    331,939.09/498,205.92 = 172,129.51/x
  3. Step 3: Cross multiply
    331,939.09x = 498,205.92 × 172,129.51
  4. Step 4: Simplify right side
    331,939.09x = 85,755,940,888.70
  5. Step 5: Solve for x
    x = 85,755,940,888.70/331,939.09
  6. Step 6: Final answer
    x = 258,348.42

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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.