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Finding the Fourth Proportional to 303,778.07, 419,217.25 and 167,809.21

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Solution

The fourth proportional to 303,778.07, 419,217.25 and 167,809.21 is: 231,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,778.07 : 419,217.25 = 167,809.21 : x
  2. Step 2: Convert to fraction form
    303,778.07/419,217.25 = 167,809.21/x
  3. Step 3: Cross multiply
    303,778.07x = 419,217.25 × 167,809.21
  4. Step 4: Simplify right side
    303,778.07x = 70,348,515,540.87
  5. Step 5: Solve for x
    x = 70,348,515,540.87/303,778.07
  6. Step 6: Final answer
    x = 231,578.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.