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Finding the Fourth Proportional to 306,302.22, 422,635.11 and 178,953.21

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Solution

The fourth proportional to 306,302.22, 422,635.11 and 178,953.21 is: 246,919.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,302.22 : 422,635.11 = 178,953.21 : x
  2. Step 2: Convert to fraction form
    306,302.22/422,635.11 = 178,953.21/x
  3. Step 3: Cross multiply
    306,302.22x = 422,635.11 × 178,953.21
  4. Step 4: Simplify right side
    306,302.22x = 75,631,909,593.20
  5. Step 5: Solve for x
    x = 75,631,909,593.20/306,302.22
  6. Step 6: Final answer
    x = 246,919.23

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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.