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Finding the Fourth Proportional to 323,839.82, 485,774.31 and 99,183.89

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Solution

The fourth proportional to 323,839.82, 485,774.31 and 99,183.89 is: 148,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,839.82 : 485,774.31 = 99,183.89 : x
  2. Step 2: Convert to fraction form
    323,839.82/485,774.31 = 99,183.89/x
  3. Step 3: Cross multiply
    323,839.82x = 485,774.31 × 99,183.89
  4. Step 4: Simplify right side
    323,839.82x = 48,180,987,314.24
  5. Step 5: Solve for x
    x = 48,180,987,314.24/323,839.82
  6. Step 6: Final answer
    x = 148,780.30

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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.