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Finding the Fourth Proportional to 281,474.40, 422,239.30 and 81,796.54

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Solution

The fourth proportional to 281,474.40, 422,239.30 and 81,796.54 is: 122,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,474.40 : 422,239.30 = 81,796.54 : x
  2. Step 2: Convert to fraction form
    281,474.40/422,239.30 = 81,796.54/x
  3. Step 3: Cross multiply
    281,474.40x = 422,239.30 × 81,796.54
  4. Step 4: Simplify right side
    281,474.40x = 34,537,713,792.02
  5. Step 5: Solve for x
    x = 34,537,713,792.02/281,474.40
  6. Step 6: Final answer
    x = 122,702.86

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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.