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Finding the Fourth Proportional to 263,494.21, 395,304.29 and 86,001.54

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Solution

The fourth proportional to 263,494.21, 395,304.29 and 86,001.54 is: 129,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,494.21 : 395,304.29 = 86,001.54 : x
  2. Step 2: Convert to fraction form
    263,494.21/395,304.29 = 86,001.54/x
  3. Step 3: Cross multiply
    263,494.21x = 395,304.29 × 86,001.54
  4. Step 4: Simplify right side
    263,494.21x = 33,996,777,708.61
  5. Step 5: Solve for x
    x = 33,996,777,708.61/263,494.21
  6. Step 6: Final answer
    x = 129,022.86

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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.