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Finding the Fourth Proportional to 321,781.70, 444,060.69 and 178,544.54

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Solution

The fourth proportional to 321,781.70, 444,060.69 and 178,544.54 is: 246,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,781.70 : 444,060.69 = 178,544.54 : x
  2. Step 2: Convert to fraction form
    321,781.70/444,060.69 = 178,544.54/x
  3. Step 3: Cross multiply
    321,781.70x = 444,060.69 × 178,544.54
  4. Step 4: Simplify right side
    321,781.70x = 79,284,611,628.13
  5. Step 5: Solve for x
    x = 79,284,611,628.13/321,781.70
  6. Step 6: Final answer
    x = 246,392.54

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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.