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Finding the Fourth Proportional to 323,976.60, 485,964.90 and 205,732.80

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Solution

The fourth proportional to 323,976.60, 485,964.90 and 205,732.80 is: 308,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,976.60 : 485,964.90 = 205,732.80 : x
  2. Step 2: Convert to fraction form
    323,976.60/485,964.90 = 205,732.80/x
  3. Step 3: Cross multiply
    323,976.60x = 485,964.90 × 205,732.80
  4. Step 4: Simplify right side
    323,976.60x = 99,978,919,578.72
  5. Step 5: Solve for x
    x = 99,978,919,578.72/323,976.60
  6. Step 6: Final answer
    x = 308,599.20

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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.