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Finding the Fourth Proportional to 400,672.20, 552,910.50 and 219,380.84

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Solution

The fourth proportional to 400,672.20, 552,910.50 and 219,380.84 is: 302,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,672.20 : 552,910.50 = 219,380.84 : x
  2. Step 2: Convert to fraction form
    400,672.20/552,910.50 = 219,380.84/x
  3. Step 3: Cross multiply
    400,672.20x = 552,910.50 × 219,380.84
  4. Step 4: Simplify right side
    400,672.20x = 121,297,969,934.82
  5. Step 5: Solve for x
    x = 121,297,969,934.82/400,672.20
  6. Step 6: Final answer
    x = 302,736.18

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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.