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Finding the Fourth Proportional to 217,866, 326,799 and 70,122

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Solution

The fourth proportional to 217,866, 326,799 and 70,122 is: 105,183

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,866 : 326,799 = 70,122 : x
  2. Step 2: Convert to fraction form
    217,866/326,799 = 70,122/x
  3. Step 3: Cross multiply
    217,866x = 326,799 × 70,122
  4. Step 4: Simplify right side
    217,866x = 22,915,799,478
  5. Step 5: Solve for x
    x = 22,915,799,478/217,866
  6. Step 6: Final answer
    x = 105,183

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.