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Finding the Fourth Proportional to 323,801.20, 485,701.80 and 205,994.80

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Solution

The fourth proportional to 323,801.20, 485,701.80 and 205,994.80 is: 308,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,801.20 : 485,701.80 = 205,994.80 : x
  2. Step 2: Convert to fraction form
    323,801.20/485,701.80 = 205,994.80/x
  3. Step 3: Cross multiply
    323,801.20x = 485,701.80 × 205,994.80
  4. Step 4: Simplify right side
    323,801.20x = 100,052,045,150.64
  5. Step 5: Solve for x
    x = 100,052,045,150.64/323,801.20
  6. Step 6: Final answer
    x = 308,992.20

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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.