Home / 268,857.88-403,286.82-81,869.38

Finding the Fourth Proportional to 268,857.88, 403,286.82 and 81,869.38

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Solution

The fourth proportional to 268,857.88, 403,286.82 and 81,869.38 is: 122,804.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,857.88 : 403,286.82 = 81,869.38 : x
  2. Step 2: Convert to fraction form
    268,857.88/403,286.82 = 81,869.38/x
  3. Step 3: Cross multiply
    268,857.88x = 403,286.82 × 81,869.38
  4. Step 4: Simplify right side
    268,857.88x = 33,016,841,915.57
  5. Step 5: Solve for x
    x = 33,016,841,915.57/268,857.88
  6. Step 6: Final answer
    x = 122,804.07

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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.