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Finding the Fourth Proportional to 324,505.07, 486,757.97 and 84,618.75

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Solution

The fourth proportional to 324,505.07, 486,757.97 and 84,618.75 is: 126,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,505.07 : 486,757.97 = 84,618.75 : x
  2. Step 2: Convert to fraction form
    324,505.07/486,757.97 = 84,618.75/x
  3. Step 3: Cross multiply
    324,505.07x = 486,757.97 × 84,618.75
  4. Step 4: Simplify right side
    324,505.07x = 41,188,850,550.84
  5. Step 5: Solve for x
    x = 41,188,850,550.84/324,505.07
  6. Step 6: Final answer
    x = 126,928.22

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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.