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Finding the Fourth Proportional to 325,616.72, 449,448.60 and 198,355.18

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Solution

The fourth proportional to 325,616.72, 449,448.60 and 198,355.18 is: 273,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,616.72 : 449,448.60 = 198,355.18 : x
  2. Step 2: Convert to fraction form
    325,616.72/449,448.60 = 198,355.18/x
  3. Step 3: Cross multiply
    325,616.72x = 449,448.60 × 198,355.18
  4. Step 4: Simplify right side
    325,616.72x = 89,150,457,953.75
  5. Step 5: Solve for x
    x = 89,150,457,953.75/325,616.72
  6. Step 6: Final answer
    x = 273,789.56

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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.