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Finding the Fourth Proportional to 321,919.62, 444,228.21 and 178,679.70

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Solution

The fourth proportional to 321,919.62, 444,228.21 and 178,679.70 is: 246,566.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,919.62 : 444,228.21 = 178,679.70 : x
  2. Step 2: Convert to fraction form
    321,919.62/444,228.21 = 178,679.70/x
  3. Step 3: Cross multiply
    321,919.62x = 444,228.21 × 178,679.70
  4. Step 4: Simplify right side
    321,919.62x = 79,374,563,294.34
  5. Step 5: Solve for x
    x = 79,374,563,294.34/321,919.62
  6. Step 6: Final answer
    x = 246,566.40

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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.