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Finding the Fourth Proportional to 263,374.53, 395,102.79 and 85,840.35

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Solution

The fourth proportional to 263,374.53, 395,102.79 and 85,840.35 is: 128,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,374.53 : 395,102.79 = 85,840.35 : x
  2. Step 2: Convert to fraction form
    263,374.53/395,102.79 = 85,840.35/x
  3. Step 3: Cross multiply
    263,374.53x = 395,102.79 × 85,840.35
  4. Step 4: Simplify right side
    263,374.53x = 33,915,761,779.58
  5. Step 5: Solve for x
    x = 33,915,761,779.58/263,374.53
  6. Step 6: Final answer
    x = 128,773.89

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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.