Home / 397,198.32-548,138.97-215,913.03

Finding the Fourth Proportional to 397,198.32, 548,138.97 and 215,913.03

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Solution

The fourth proportional to 397,198.32, 548,138.97 and 215,913.03 is: 297,962.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,198.32 : 548,138.97 = 215,913.03 : x
  2. Step 2: Convert to fraction form
    397,198.32/548,138.97 = 215,913.03/x
  3. Step 3: Cross multiply
    397,198.32x = 548,138.97 × 215,913.03
  4. Step 4: Simplify right side
    397,198.32x = 118,350,345,873.78
  5. Step 5: Solve for x
    x = 118,350,345,873.78/397,198.32
  6. Step 6: Final answer
    x = 297,962.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.