Home / 217,716.57-300,443.04-120,917.43

Finding the Fourth Proportional to 217,716.57, 300,443.04 and 120,917.43

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Solution

The fourth proportional to 217,716.57, 300,443.04 and 120,917.43 is: 166,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,716.57 : 300,443.04 = 120,917.43 : x
  2. Step 2: Convert to fraction form
    217,716.57/300,443.04 = 120,917.43/x
  3. Step 3: Cross multiply
    217,716.57x = 300,443.04 × 120,917.43
  4. Step 4: Simplify right side
    217,716.57x = 36,328,800,258.19
  5. Step 5: Solve for x
    x = 36,328,800,258.19/217,716.57
  6. Step 6: Final answer
    x = 166,862.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.