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Finding the Fourth Proportional to 306,331.22, 422,674.62 and 178,982.22

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Solution

The fourth proportional to 306,331.22, 422,674.62 and 178,982.22 is: 246,958.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,331.22 : 422,674.62 = 178,982.22 : x
  2. Step 2: Convert to fraction form
    306,331.22/422,674.62 = 178,982.22/x
  3. Step 3: Cross multiply
    306,331.22x = 422,674.62 × 178,982.22
  4. Step 4: Simplify right side
    306,331.22x = 75,651,241,825.26
  5. Step 5: Solve for x
    x = 75,651,241,825.26/306,331.22
  6. Step 6: Final answer
    x = 246,958.97

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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.