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Finding the Fourth Proportional to 323,738.62, 485,590.60 and 99,099.16

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Solution

The fourth proportional to 323,738.62, 485,590.60 and 99,099.16 is: 148,643.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,738.62 : 485,590.60 = 99,099.16 : x
  2. Step 2: Convert to fraction form
    323,738.62/485,590.60 = 99,099.16/x
  3. Step 3: Cross multiply
    323,738.62x = 485,590.60 × 99,099.16
  4. Step 4: Simplify right side
    323,738.62x = 48,121,620,563.90
  5. Step 5: Solve for x
    x = 48,121,620,563.90/323,738.62
  6. Step 6: Final answer
    x = 148,643.44

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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.