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Finding the Fourth Proportional to 208,876.82, 288,249.76 and 113,383.52

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Solution

The fourth proportional to 208,876.82, 288,249.76 and 113,383.52 is: 156,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,876.82 : 288,249.76 = 113,383.52 : x
  2. Step 2: Convert to fraction form
    208,876.82/288,249.76 = 113,383.52/x
  3. Step 3: Cross multiply
    208,876.82x = 288,249.76 × 113,383.52
  4. Step 4: Simplify right side
    208,876.82x = 32,682,770,703.25
  5. Step 5: Solve for x
    x = 32,682,770,703.25/208,876.82
  6. Step 6: Final answer
    x = 156,469.12

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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.