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Finding the Fourth Proportional to 306,218.56, 422,600.60 and 170,253.60

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Solution

The fourth proportional to 306,218.56, 422,600.60 and 170,253.60 is: 234,960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,218.56 : 422,600.60 = 170,253.60 : x
  2. Step 2: Convert to fraction form
    306,218.56/422,600.60 = 170,253.60/x
  3. Step 3: Cross multiply
    306,218.56x = 422,600.60 × 170,253.60
  4. Step 4: Simplify right side
    306,218.56x = 71,949,273,512.16
  5. Step 5: Solve for x
    x = 71,949,273,512.16/306,218.56
  6. Step 6: Final answer
    x = 234,960.52

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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.