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Finding the Fourth Proportional to 263,325.60, 394,979.52 and 105,511.68

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Solution

The fourth proportional to 263,325.60, 394,979.52 and 105,511.68 is: 158,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,325.60 : 394,979.52 = 105,511.68 : x
  2. Step 2: Convert to fraction form
    263,325.60/394,979.52 = 105,511.68/x
  3. Step 3: Cross multiply
    263,325.60x = 394,979.52 × 105,511.68
  4. Step 4: Simplify right side
    263,325.60x = 41,674,952,720.79
  5. Step 5: Solve for x
    x = 41,674,952,720.79/263,325.60
  6. Step 6: Final answer
    x = 158,263.96

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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.