Home / 281,489.40-422,261.82-81,811.53

Finding the Fourth Proportional to 281,489.40, 422,261.82 and 81,811.53

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Solution

The fourth proportional to 281,489.40, 422,261.82 and 81,811.53 is: 122,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,489.40 : 422,261.82 = 81,811.53 : x
  2. Step 2: Convert to fraction form
    281,489.40/422,261.82 = 81,811.53/x
  3. Step 3: Cross multiply
    281,489.40x = 422,261.82 × 81,811.53
  4. Step 4: Simplify right side
    281,489.40x = 34,545,885,554.78
  5. Step 5: Solve for x
    x = 34,545,885,554.78/281,489.40
  6. Step 6: Final answer
    x = 122,725.35

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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.