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Finding the Fourth Proportional to 324,546.36, 486,821.38 and 87,891.10

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Solution

The fourth proportional to 324,546.36, 486,821.38 and 87,891.10 is: 131,837.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,546.36 : 486,821.38 = 87,891.10 : x
  2. Step 2: Convert to fraction form
    324,546.36/486,821.38 = 87,891.10/x
  3. Step 3: Cross multiply
    324,546.36x = 486,821.38 × 87,891.10
  4. Step 4: Simplify right side
    324,546.36x = 42,787,266,591.72
  5. Step 5: Solve for x
    x = 42,787,266,591.72/324,546.36
  6. Step 6: Final answer
    x = 131,837.15

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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.