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Finding the Fourth Proportional to 263,455.61, 395,257.40 and 105,794.78

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Solution

The fourth proportional to 263,455.61, 395,257.40 and 105,794.78 is: 158,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,455.61 : 395,257.40 = 105,794.78 : x
  2. Step 2: Convert to fraction form
    263,455.61/395,257.40 = 105,794.78/x
  3. Step 3: Cross multiply
    263,455.61x = 395,257.40 × 105,794.78
  4. Step 4: Simplify right side
    263,455.61x = 41,816,169,147.40
  5. Step 5: Solve for x
    x = 41,816,169,147.40/263,455.61
  6. Step 6: Final answer
    x = 158,721.88

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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.