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Finding the Fourth Proportional to 263,308.66, 363,409.38 and 161,390.80

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Solution

The fourth proportional to 263,308.66, 363,409.38 and 161,390.80 is: 222,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,308.66 : 363,409.38 = 161,390.80 : x
  2. Step 2: Convert to fraction form
    263,308.66/363,409.38 = 161,390.80/x
  3. Step 3: Cross multiply
    263,308.66x = 363,409.38 × 161,390.80
  4. Step 4: Simplify right side
    263,308.66x = 58,650,930,565.70
  5. Step 5: Solve for x
    x = 58,650,930,565.70/263,308.66
  6. Step 6: Final answer
    x = 222,745.92

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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.