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Finding the Fourth Proportional to 221,608.80, 331,945.20 and 146,764.80

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Solution

The fourth proportional to 221,608.80, 331,945.20 and 146,764.80 is: 219,837.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,608.80 : 331,945.20 = 146,764.80 : x
  2. Step 2: Convert to fraction form
    221,608.80/331,945.20 = 146,764.80/x
  3. Step 3: Cross multiply
    221,608.80x = 331,945.20 × 146,764.80
  4. Step 4: Simplify right side
    221,608.80x = 48,717,870,888.96
  5. Step 5: Solve for x
    x = 48,717,870,888.96/221,608.80
  6. Step 6: Final answer
    x = 219,837.26

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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.