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Finding the Fourth Proportional to 281,361.75, 422,109.75 and 91,822.47

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Solution

The fourth proportional to 281,361.75, 422,109.75 and 91,822.47 is: 137,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,361.75 : 422,109.75 = 91,822.47 : x
  2. Step 2: Convert to fraction form
    281,361.75/422,109.75 = 91,822.47/x
  3. Step 3: Cross multiply
    281,361.75x = 422,109.75 × 91,822.47
  4. Step 4: Simplify right side
    281,361.75x = 38,759,159,856.08
  5. Step 5: Solve for x
    x = 38,759,159,856.08/281,361.75
  6. Step 6: Final answer
    x = 137,755.61

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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.