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Finding the Fourth Proportional to 217,670.84, 326,632.31 and 91,299.83

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Solution

The fourth proportional to 217,670.84, 326,632.31 and 91,299.83 is: 137,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,670.84 : 326,632.31 = 91,299.83 : x
  2. Step 2: Convert to fraction form
    217,670.84/326,632.31 = 91,299.83/x
  3. Step 3: Cross multiply
    217,670.84x = 326,632.31 × 91,299.83
  4. Step 4: Simplify right side
    217,670.84x = 29,821,472,285.85
  5. Step 5: Solve for x
    x = 29,821,472,285.85/217,670.84
  6. Step 6: Final answer
    x = 137,002.61

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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.