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Finding the Fourth Proportional to 217,570.70, 326,371.86 and 91,083.74

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Solution

The fourth proportional to 217,570.70, 326,371.86 and 91,083.74 is: 136,632.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,570.70 : 326,371.86 = 91,083.74 : x
  2. Step 2: Convert to fraction form
    217,570.70/326,371.86 = 91,083.74/x
  3. Step 3: Cross multiply
    217,570.70x = 326,371.86 × 91,083.74
  4. Step 4: Simplify right side
    217,570.70x = 29,727,168,007.70
  5. Step 5: Solve for x
    x = 29,727,168,007.70/217,570.70
  6. Step 6: Final answer
    x = 136,632.22

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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.