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Finding the Fourth Proportional to 263,633.63, 395,517.87 and 76,645.13

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Solution

The fourth proportional to 263,633.63, 395,517.87 and 76,645.13 is: 114,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,633.63 : 395,517.87 = 76,645.13 : x
  2. Step 2: Convert to fraction form
    263,633.63/395,517.87 = 76,645.13/x
  3. Step 3: Cross multiply
    263,633.63x = 395,517.87 × 76,645.13
  4. Step 4: Simplify right side
    263,633.63x = 30,314,516,585.88
  5. Step 5: Solve for x
    x = 30,314,516,585.88/263,633.63
  6. Step 6: Final answer
    x = 114,987.29

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1.5x scale

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.