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Finding the Fourth Proportional to 324,115.36, 486,173.03 and 87,458.04

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Solution

The fourth proportional to 324,115.36, 486,173.03 and 87,458.04 is: 131,187.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,115.36 : 486,173.03 = 87,458.04 : x
  2. Step 2: Convert to fraction form
    324,115.36/486,173.03 = 87,458.04/x
  3. Step 3: Cross multiply
    324,115.36x = 486,173.03 × 87,458.04
  4. Step 4: Simplify right side
    324,115.36x = 42,519,739,867.37
  5. Step 5: Solve for x
    x = 42,519,739,867.37/324,115.36
  6. Step 6: Final answer
    x = 131,187.06

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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.