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Finding the Fourth Proportional to 222,324.72, 306,807.48 and 121,722

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Solution

The fourth proportional to 222,324.72, 306,807.48 and 121,722 is: 167,976.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,324.72 : 306,807.48 = 121,722 : x
  2. Step 2: Convert to fraction form
    222,324.72/306,807.48 = 121,722/x
  3. Step 3: Cross multiply
    222,324.72x = 306,807.48 × 121,722
  4. Step 4: Simplify right side
    222,324.72x = 37,345,220,080.56
  5. Step 5: Solve for x
    x = 37,345,220,080.56/222,324.72
  6. Step 6: Final answer
    x = 167,976.01

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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.