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Finding the Fourth Proportional to 263,800.98, 395,698 and 64,120.78

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Solution

The fourth proportional to 263,800.98, 395,698 and 64,120.78 is: 96,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,800.98 : 395,698 = 64,120.78 : x
  2. Step 2: Convert to fraction form
    263,800.98/395,698 = 64,120.78/x
  3. Step 3: Cross multiply
    263,800.98x = 395,698 × 64,120.78
  4. Step 4: Simplify right side
    263,800.98x = 25,372,464,404.44
  5. Step 5: Solve for x
    x = 25,372,464,404.44/263,800.98
  6. Step 6: Final answer
    x = 96,180.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.