Home / 398,278.28-597,288.21-131,967.29

Finding the Fourth Proportional to 398,278.28, 597,288.21 and 131,967.29

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Solution

The fourth proportional to 398,278.28, 597,288.21 and 131,967.29 is: 197,908.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,278.28 : 597,288.21 = 131,967.29 : x
  2. Step 2: Convert to fraction form
    398,278.28/597,288.21 = 131,967.29/x
  3. Step 3: Cross multiply
    398,278.28x = 597,288.21 × 131,967.29
  4. Step 4: Simplify right side
    398,278.28x = 78,822,503,436.21
  5. Step 5: Solve for x
    x = 78,822,503,436.21/398,278.28
  6. Step 6: Final answer
    x = 197,908.12

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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.