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Finding the Fourth Proportional to 398,768.27, 550,278.33 and 226,662.30

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Solution

The fourth proportional to 398,768.27, 550,278.33 and 226,662.30 is: 312,781.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,768.27 : 550,278.33 = 226,662.30 : x
  2. Step 2: Convert to fraction form
    398,768.27/550,278.33 = 226,662.30/x
  3. Step 3: Cross multiply
    398,768.27x = 550,278.33 × 226,662.30
  4. Step 4: Simplify right side
    398,768.27x = 124,727,351,067.98
  5. Step 5: Solve for x
    x = 124,727,351,067.98/398,768.27
  6. Step 6: Final answer
    x = 312,781.54

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1.5x scale

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.