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Finding the Fourth Proportional to 287,560.97, 396,835.72 and 166,773.87

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Solution

The fourth proportional to 287,560.97, 396,835.72 and 166,773.87 is: 230,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,560.97 : 396,835.72 = 166,773.87 : x
  2. Step 2: Convert to fraction form
    287,560.97/396,835.72 = 166,773.87/x
  3. Step 3: Cross multiply
    287,560.97x = 396,835.72 × 166,773.87
  4. Step 4: Simplify right side
    287,560.97x = 66,181,828,778.64
  5. Step 5: Solve for x
    x = 66,181,828,778.64/287,560.97
  6. Step 6: Final answer
    x = 230,148.86

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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.