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Finding the Fourth Proportional to 352,338.72, 486,194.58 and 199,390.86

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Solution

The fourth proportional to 352,338.72, 486,194.58 and 199,390.86 is: 275,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,338.72 : 486,194.58 = 199,390.86 : x
  2. Step 2: Convert to fraction form
    352,338.72/486,194.58 = 199,390.86/x
  3. Step 3: Cross multiply
    352,338.72x = 486,194.58 × 199,390.86
  4. Step 4: Simplify right side
    352,338.72x = 96,942,755,433.54
  5. Step 5: Solve for x
    x = 96,942,755,433.54/352,338.72
  6. Step 6: Final answer
    x = 275,140.79

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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.