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Finding the Fourth Proportional to 217,668.33, 326,628.55 and 91,297.33

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Solution

The fourth proportional to 217,668.33, 326,628.55 and 91,297.33 is: 136,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,668.33 : 326,628.55 = 91,297.33 : x
  2. Step 2: Convert to fraction form
    217,668.33/326,628.55 = 91,297.33/x
  3. Step 3: Cross multiply
    217,668.33x = 326,628.55 × 91,297.33
  4. Step 4: Simplify right side
    217,668.33x = 29,820,314,516.77
  5. Step 5: Solve for x
    x = 29,820,314,516.77/217,668.33
  6. Step 6: Final answer
    x = 136,998.87

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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.