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Finding the Fourth Proportional to 263,268.60, 394,902.90 and 207,281.40

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Solution

The fourth proportional to 263,268.60, 394,902.90 and 207,281.40 is: 310,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,268.60 : 394,902.90 = 207,281.40 : x
  2. Step 2: Convert to fraction form
    263,268.60/394,902.90 = 207,281.40/x
  3. Step 3: Cross multiply
    263,268.60x = 394,902.90 × 207,281.40
  4. Step 4: Simplify right side
    263,268.60x = 81,856,025,976.06
  5. Step 5: Solve for x
    x = 81,856,025,976.06/263,268.60
  6. Step 6: Final answer
    x = 310,922.10

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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.