Home / 204,433.78-306,690.80-71,318.38

Finding the Fourth Proportional to 204,433.78, 306,690.80 and 71,318.38

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Solution

The fourth proportional to 204,433.78, 306,690.80 and 71,318.38 is: 106,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,433.78 : 306,690.80 = 71,318.38 : x
  2. Step 2: Convert to fraction form
    204,433.78/306,690.80 = 71,318.38/x
  3. Step 3: Cross multiply
    204,433.78x = 306,690.80 × 71,318.38
  4. Step 4: Simplify right side
    204,433.78x = 21,872,691,016.90
  5. Step 5: Solve for x
    x = 21,872,691,016.90/204,433.78
  6. Step 6: Final answer
    x = 106,991.57

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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.