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Finding the Fourth Proportional to 356,616.72, 492,181.54 and 220,694.44

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Solution

The fourth proportional to 356,616.72, 492,181.54 and 220,694.44 is: 304,589.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,616.72 : 492,181.54 = 220,694.44 : x
  2. Step 2: Convert to fraction form
    356,616.72/492,181.54 = 220,694.44/x
  3. Step 3: Cross multiply
    356,616.72x = 492,181.54 × 220,694.44
  4. Step 4: Simplify right side
    356,616.72x = 108,621,729,348.64
  5. Step 5: Solve for x
    x = 108,621,729,348.64/356,616.72
  6. Step 6: Final answer
    x = 304,589.56

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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.