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Finding the Fourth Proportional to 288,630.37, 398,322.21 and 161,305.96

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Solution

The fourth proportional to 288,630.37, 398,322.21 and 161,305.96 is: 222,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,630.37 : 398,322.21 = 161,305.96 : x
  2. Step 2: Convert to fraction form
    288,630.37/398,322.21 = 161,305.96/x
  3. Step 3: Cross multiply
    288,630.37x = 398,322.21 × 161,305.96
  4. Step 4: Simplify right side
    288,630.37x = 64,251,744,481.76
  5. Step 5: Solve for x
    x = 64,251,744,481.76/288,630.37
  6. Step 6: Final answer
    x = 222,609.10

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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.