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Finding the Fourth Proportional to 306,238.14, 422,600.76 and 170,265.06

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Solution

The fourth proportional to 306,238.14, 422,600.76 and 170,265.06 is: 234,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,238.14 : 422,600.76 = 170,265.06 : x
  2. Step 2: Convert to fraction form
    306,238.14/422,600.76 = 170,265.06/x
  3. Step 3: Cross multiply
    306,238.14x = 422,600.76 × 170,265.06
  4. Step 4: Simplify right side
    306,238.14x = 71,954,143,757.45
  5. Step 5: Solve for x
    x = 71,954,143,757.45/306,238.14
  6. Step 6: Final answer
    x = 234,961.41

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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.