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Finding the Fourth Proportional to 217,807.25, 326,794.63 and 105,478.83

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Solution

The fourth proportional to 217,807.25, 326,794.63 and 105,478.83 is: 158,258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,807.25 : 326,794.63 = 105,478.83 : x
  2. Step 2: Convert to fraction form
    217,807.25/326,794.63 = 105,478.83/x
  3. Step 3: Cross multiply
    217,807.25x = 326,794.63 × 105,478.83
  4. Step 4: Simplify right side
    217,807.25x = 34,469,915,222.68
  5. Step 5: Solve for x
    x = 34,469,915,222.68/217,807.25
  6. Step 6: Final answer
    x = 158,258.81

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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.