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Finding the Fourth Proportional to 397,271.32, 548,245 and 215,995.44

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Solution

The fourth proportional to 397,271.32, 548,245 and 215,995.44 is: 298,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,271.32 : 548,245 = 215,995.44 : x
  2. Step 2: Convert to fraction form
    397,271.32/548,245 = 215,995.44/x
  3. Step 3: Cross multiply
    397,271.32x = 548,245 × 215,995.44
  4. Step 4: Simplify right side
    397,271.32x = 118,418,420,002.80
  5. Step 5: Solve for x
    x = 118,418,420,002.80/397,271.32
  6. Step 6: Final answer
    x = 298,079.46

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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.