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Finding the Fourth Proportional to 217,067.70, 325,601.55 and 76,808.10

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Solution

The fourth proportional to 217,067.70, 325,601.55 and 76,808.10 is: 115,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,067.70 : 325,601.55 = 76,808.10 : x
  2. Step 2: Convert to fraction form
    217,067.70/325,601.55 = 76,808.10/x
  3. Step 3: Cross multiply
    217,067.70x = 325,601.55 × 76,808.10
  4. Step 4: Simplify right side
    217,067.70x = 25,008,836,412.56
  5. Step 5: Solve for x
    x = 25,008,836,412.56/217,067.70
  6. Step 6: Final answer
    x = 115,212.15

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1.5x scale

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.