Home / 398,540.40-597,496.32-198,758.04

Finding the Fourth Proportional to 398,540.40, 597,496.32 and 198,758.04

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Solution

The fourth proportional to 398,540.40, 597,496.32 and 198,758.04 is: 297,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,540.40 : 597,496.32 = 198,758.04 : x
  2. Step 2: Convert to fraction form
    398,540.40/597,496.32 = 198,758.04/x
  3. Step 3: Cross multiply
    398,540.40x = 597,496.32 × 198,758.04
  4. Step 4: Simplify right side
    398,540.40x = 118,757,197,470.41
  5. Step 5: Solve for x
    x = 118,757,197,470.41/398,540.40
  6. Step 6: Final answer
    x = 297,980.32

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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.