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Finding the Fourth Proportional to 321,987.43, 444,320.37 and 178,736.16

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Solution

The fourth proportional to 321,987.43, 444,320.37 and 178,736.16 is: 246,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,987.43 : 444,320.37 = 178,736.16 : x
  2. Step 2: Convert to fraction form
    321,987.43/444,320.37 = 178,736.16/x
  3. Step 3: Cross multiply
    321,987.43x = 444,320.37 × 178,736.16
  4. Step 4: Simplify right side
    321,987.43x = 79,416,116,743.58
  5. Step 5: Solve for x
    x = 79,416,116,743.58/321,987.43
  6. Step 6: Final answer
    x = 246,643.53

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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.