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Finding the Fourth Proportional to 323,744.60, 485,616.90 and 102,099.80

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Solution

The fourth proportional to 323,744.60, 485,616.90 and 102,099.80 is: 153,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,744.60 : 485,616.90 = 102,099.80 : x
  2. Step 2: Convert to fraction form
    323,744.60/485,616.90 = 102,099.80/x
  3. Step 3: Cross multiply
    323,744.60x = 485,616.90 × 102,099.80
  4. Step 4: Simplify right side
    323,744.60x = 49,581,388,366.62
  5. Step 5: Solve for x
    x = 49,581,388,366.62/323,744.60
  6. Step 6: Final answer
    x = 153,149.70

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1.5x scale

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.