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Finding the Fourth Proportional to 355,540.38, 490,645.67 and 194,395.38

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Solution

The fourth proportional to 355,540.38, 490,645.67 and 194,395.38 is: 268,265.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,540.38 : 490,645.67 = 194,395.38 : x
  2. Step 2: Convert to fraction form
    355,540.38/490,645.67 = 194,395.38/x
  3. Step 3: Cross multiply
    355,540.38x = 490,645.67 × 194,395.38
  4. Step 4: Simplify right side
    355,540.38x = 95,379,250,493.03
  5. Step 5: Solve for x
    x = 95,379,250,493.03/355,540.38
  6. Step 6: Final answer
    x = 268,265.59

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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.