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Finding the Fourth Proportional to 398,616.92, 550,104.60 and 237,449.96

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Solution

The fourth proportional to 398,616.92, 550,104.60 and 237,449.96 is: 327,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,616.92 : 550,104.60 = 237,449.96 : x
  2. Step 2: Convert to fraction form
    398,616.92/550,104.60 = 237,449.96/x
  3. Step 3: Cross multiply
    398,616.92x = 550,104.60 × 237,449.96
  4. Step 4: Simplify right side
    398,616.92x = 130,622,315,265.82
  5. Step 5: Solve for x
    x = 130,622,315,265.82/398,616.92
  6. Step 6: Final answer
    x = 327,688.84

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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.