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Finding the Fourth Proportional to 321,301.84, 443,388.99 and 178,058.81

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Solution

The fourth proportional to 321,301.84, 443,388.99 and 178,058.81 is: 245,716.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,301.84 : 443,388.99 = 178,058.81 : x
  2. Step 2: Convert to fraction form
    321,301.84/443,388.99 = 178,058.81/x
  3. Step 3: Cross multiply
    321,301.84x = 443,388.99 × 178,058.81
  4. Step 4: Simplify right side
    321,301.84x = 78,949,313,709.56
  5. Step 5: Solve for x
    x = 78,949,313,709.56/321,301.84
  6. Step 6: Final answer
    x = 245,716.97

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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.