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Finding the Fourth Proportional to 321,860.56, 444,159.72 and 178,618.48

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Solution

The fourth proportional to 321,860.56, 444,159.72 and 178,618.48 is: 246,489.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,860.56 : 444,159.72 = 178,618.48 : x
  2. Step 2: Convert to fraction form
    321,860.56/444,159.72 = 178,618.48/x
  3. Step 3: Cross multiply
    321,860.56x = 444,159.72 × 178,618.48
  4. Step 4: Simplify right side
    321,860.56x = 79,335,134,063.63
  5. Step 5: Solve for x
    x = 79,335,134,063.63/321,860.56
  6. Step 6: Final answer
    x = 246,489.14

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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.