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Finding the Fourth Proportional to 321,940.98, 444,298.74 and 178,703.43

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Solution

The fourth proportional to 321,940.98, 444,298.74 and 178,703.43 is: 246,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,940.98 : 444,298.74 = 178,703.43 : x
  2. Step 2: Convert to fraction form
    321,940.98/444,298.74 = 178,703.43/x
  3. Step 3: Cross multiply
    321,940.98x = 444,298.74 × 178,703.43
  4. Step 4: Simplify right side
    321,940.98x = 79,397,708,782.68
  5. Step 5: Solve for x
    x = 79,397,708,782.68/321,940.98
  6. Step 6: Final answer
    x = 246,621.94

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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.