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Finding the Fourth Proportional to 262,719.25, 394,104.39 and 70,591.30

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Solution

The fourth proportional to 262,719.25, 394,104.39 and 70,591.30 is: 105,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,719.25 : 394,104.39 = 70,591.30 : x
  2. Step 2: Convert to fraction form
    262,719.25/394,104.39 = 70,591.30/x
  3. Step 3: Cross multiply
    262,719.25x = 394,104.39 × 70,591.30
  4. Step 4: Simplify right side
    262,719.25x = 27,820,339,975.83
  5. Step 5: Solve for x
    x = 27,820,339,975.83/262,719.25
  6. Step 6: Final answer
    x = 105,893.80

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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.