Home / 258,268.38-387,519.35-131,843.39

Finding the Fourth Proportional to 258,268.38, 387,519.35 and 131,843.39

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Solution

The fourth proportional to 258,268.38, 387,519.35 and 131,843.39 is: 197,824.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,268.38 : 387,519.35 = 131,843.39 : x
  2. Step 2: Convert to fraction form
    258,268.38/387,519.35 = 131,843.39/x
  3. Step 3: Cross multiply
    258,268.38x = 387,519.35 × 131,843.39
  4. Step 4: Simplify right side
    258,268.38x = 51,091,862,197.78
  5. Step 5: Solve for x
    x = 51,091,862,197.78/258,268.38
  6. Step 6: Final answer
    x = 197,824.69

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1.5x scale

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.