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Finding the Fourth Proportional to 352,408.44, 486,102.45 and 209,067

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Solution

The fourth proportional to 352,408.44, 486,102.45 and 209,067 is: 288,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,408.44 : 486,102.45 = 209,067 : x
  2. Step 2: Convert to fraction form
    352,408.44/486,102.45 = 209,067/x
  3. Step 3: Cross multiply
    352,408.44x = 486,102.45 × 209,067
  4. Step 4: Simplify right side
    352,408.44x = 101,627,980,914.15
  5. Step 5: Solve for x
    x = 101,627,980,914.15/352,408.44
  6. Step 6: Final answer
    x = 288,381.23

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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.