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Finding the Fourth Proportional to 263,638.08, 395,453.76 and 63,960

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Solution

The fourth proportional to 263,638.08, 395,453.76 and 63,960 is: 95,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,638.08 : 395,453.76 = 63,960 : x
  2. Step 2: Convert to fraction form
    263,638.08/395,453.76 = 63,960/x
  3. Step 3: Cross multiply
    263,638.08x = 395,453.76 × 63,960
  4. Step 4: Simplify right side
    263,638.08x = 25,293,222,489.60
  5. Step 5: Solve for x
    x = 25,293,222,489.60/263,638.08
  6. Step 6: Final answer
    x = 95,939.18

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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.