Home / 398,255.15-597,161.26-131,870.35

Finding the Fourth Proportional to 398,255.15, 597,161.26 and 131,870.35

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Solution

The fourth proportional to 398,255.15, 597,161.26 and 131,870.35 is: 197,732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,255.15 : 597,161.26 = 131,870.35 : x
  2. Step 2: Convert to fraction form
    398,255.15/597,161.26 = 131,870.35/x
  3. Step 3: Cross multiply
    398,255.15x = 597,161.26 × 131,870.35
  4. Step 4: Simplify right side
    398,255.15x = 78,747,862,540.06
  5. Step 5: Solve for x
    x = 78,747,862,540.06/398,255.15
  6. Step 6: Final answer
    x = 197,732.19

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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.