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Finding the Fourth Proportional to 221,016.01, 331,622.03 and 115,809.97

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Solution

The fourth proportional to 221,016.01, 331,622.03 and 115,809.97 is: 173,766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,016.01 : 331,622.03 = 115,809.97 : x
  2. Step 2: Convert to fraction form
    221,016.01/331,622.03 = 115,809.97/x
  3. Step 3: Cross multiply
    221,016.01x = 331,622.03 × 115,809.97
  4. Step 4: Simplify right side
    221,016.01x = 38,405,137,345.64
  5. Step 5: Solve for x
    x = 38,405,137,345.64/221,016.01
  6. Step 6: Final answer
    x = 173,766.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.