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Finding the Fourth Proportional to 263,633.88, 395,518.25 and 76,645.38

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Solution

The fourth proportional to 263,633.88, 395,518.25 and 76,645.38 is: 114,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,633.88 : 395,518.25 = 76,645.38 : x
  2. Step 2: Convert to fraction form
    263,633.88/395,518.25 = 76,645.38/x
  3. Step 3: Cross multiply
    263,633.88x = 395,518.25 × 76,645.38
  4. Step 4: Simplify right side
    263,633.88x = 30,314,644,207.37
  5. Step 5: Solve for x
    x = 30,314,644,207.37/263,633.88
  6. Step 6: Final answer
    x = 114,987.67

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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.