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Finding the Fourth Proportional to 217,740.70, 326,611.08 and 67,993.81

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Solution

The fourth proportional to 217,740.70, 326,611.08 and 67,993.81 is: 101,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,740.70 : 326,611.08 = 67,993.81 : x
  2. Step 2: Convert to fraction form
    217,740.70/326,611.08 = 67,993.81/x
  3. Step 3: Cross multiply
    217,740.70x = 326,611.08 × 67,993.81
  4. Step 4: Simplify right side
    217,740.70x = 22,207,531,717.41
  5. Step 5: Solve for x
    x = 22,207,531,717.41/217,740.70
  6. Step 6: Final answer
    x = 101,990.72

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1.5x scale

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.