Home / 268,959.54-403,438.88-81,971.04

Finding the Fourth Proportional to 268,959.54, 403,438.88 and 81,971.04

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Solution

The fourth proportional to 268,959.54, 403,438.88 and 81,971.04 is: 122,956.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,959.54 : 403,438.88 = 81,971.04 : x
  2. Step 2: Convert to fraction form
    268,959.54/403,438.88 = 81,971.04/x
  3. Step 3: Cross multiply
    268,959.54x = 403,438.88 × 81,971.04
  4. Step 4: Simplify right side
    268,959.54x = 33,070,304,570.04
  5. Step 5: Solve for x
    x = 33,070,304,570.04/268,959.54
  6. Step 6: Final answer
    x = 122,956.43

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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.