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Finding the Fourth Proportional to 321,520.34, 482,181.98 and 222,318.02

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Solution

The fourth proportional to 321,520.34, 482,181.98 and 222,318.02 is: 333,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,520.34 : 482,181.98 = 222,318.02 : x
  2. Step 2: Convert to fraction form
    321,520.34/482,181.98 = 222,318.02/x
  3. Step 3: Cross multiply
    321,520.34x = 482,181.98 × 222,318.02
  4. Step 4: Simplify right side
    321,520.34x = 107,197,743,073.28
  5. Step 5: Solve for x
    x = 107,197,743,073.28/321,520.34
  6. Step 6: Final answer
    x = 333,408.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.