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Finding the Fourth Proportional to 221,118, 331,680.60 and 63,345.84

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Solution

The fourth proportional to 221,118, 331,680.60 and 63,345.84 is: 95,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,118 : 331,680.60 = 63,345.84 : x
  2. Step 2: Convert to fraction form
    221,118/331,680.60 = 63,345.84/x
  3. Step 3: Cross multiply
    221,118x = 331,680.60 × 63,345.84
  4. Step 4: Simplify right side
    221,118x = 21,010,586,218.70
  5. Step 5: Solve for x
    x = 21,010,586,218.70/221,118
  6. Step 6: Final answer
    x = 95,019.79

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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.