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Finding the Fourth Proportional to 663,249.44, 995,016.32 and 213,996

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Solution

The fourth proportional to 663,249.44, 995,016.32 and 213,996 is: 321,039.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,249.44 : 995,016.32 = 213,996 : x
  2. Step 2: Convert to fraction form
    663,249.44/995,016.32 = 213,996/x
  3. Step 3: Cross multiply
    663,249.44x = 995,016.32 × 213,996
  4. Step 4: Simplify right side
    663,249.44x = 212,929,512,414.72
  5. Step 5: Solve for x
    x = 212,929,512,414.72/663,249.44
  6. Step 6: Final answer
    x = 321,039.87

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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.