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Finding the Fourth Proportional to 451,388.28, 622,906.92 and 247,439.64

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Solution

The fourth proportional to 451,388.28, 622,906.92 and 247,439.64 is: 341,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,388.28 : 622,906.92 = 247,439.64 : x
  2. Step 2: Convert to fraction form
    451,388.28/622,906.92 = 247,439.64/x
  3. Step 3: Cross multiply
    451,388.28x = 622,906.92 × 247,439.64
  4. Step 4: Simplify right side
    451,388.28x = 154,131,864,038.31
  5. Step 5: Solve for x
    x = 154,131,864,038.31/451,388.28
  6. Step 6: Final answer
    x = 341,461.82

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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.