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Finding the Fourth Proportional to 217,708.84, 326,575.41 and 67,969.81

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Solution

The fourth proportional to 217,708.84, 326,575.41 and 67,969.81 is: 101,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,708.84 : 326,575.41 = 67,969.81 : x
  2. Step 2: Convert to fraction form
    217,708.84/326,575.41 = 67,969.81/x
  3. Step 3: Cross multiply
    217,708.84x = 326,575.41 × 67,969.81
  4. Step 4: Simplify right side
    217,708.84x = 22,197,268,568.37
  5. Step 5: Solve for x
    x = 22,197,268,568.37/217,708.84
  6. Step 6: Final answer
    x = 101,958.51

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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.