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Finding the Fourth Proportional to 263,296.60, 394,847.70 and 85,809.40

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Solution

The fourth proportional to 263,296.60, 394,847.70 and 85,809.40 is: 128,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,296.60 : 394,847.70 = 85,809.40 : x
  2. Step 2: Convert to fraction form
    263,296.60/394,847.70 = 85,809.40/x
  3. Step 3: Cross multiply
    263,296.60x = 394,847.70 × 85,809.40
  4. Step 4: Simplify right side
    263,296.60x = 33,881,644,228.38
  5. Step 5: Solve for x
    x = 33,881,644,228.38/263,296.60
  6. Step 6: Final answer
    x = 128,682.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.