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Finding the Fourth Proportional to 321,391.84, 443,524.44 and 178,154.32

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Solution

The fourth proportional to 321,391.84, 443,524.44 and 178,154.32 is: 245,855.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,391.84 : 443,524.44 = 178,154.32 : x
  2. Step 2: Convert to fraction form
    321,391.84/443,524.44 = 178,154.32/x
  3. Step 3: Cross multiply
    321,391.84x = 443,524.44 × 178,154.32
  4. Step 4: Simplify right side
    321,391.84x = 79,015,795,011.58
  5. Step 5: Solve for x
    x = 79,015,795,011.58/321,391.84
  6. Step 6: Final answer
    x = 245,855.01

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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.