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Finding the Fourth Proportional to 288,979.92, 398,832.48 and 161,664.12

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Solution

The fourth proportional to 288,979.92, 398,832.48 and 161,664.12 is: 223,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,979.92 : 398,832.48 = 161,664.12 : x
  2. Step 2: Convert to fraction form
    288,979.92/398,832.48 = 161,664.12/x
  3. Step 3: Cross multiply
    288,979.92x = 398,832.48 × 161,664.12
  4. Step 4: Simplify right side
    288,979.92x = 64,476,901,906.62
  5. Step 5: Solve for x
    x = 64,476,901,906.62/288,979.92
  6. Step 6: Final answer
    x = 223,118.97

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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.