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Finding the Fourth Proportional to 217,046.39, 325,520.37 and 76,805.01

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Solution

The fourth proportional to 217,046.39, 325,520.37 and 76,805.01 is: 115,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,046.39 : 325,520.37 = 76,805.01 : x
  2. Step 2: Convert to fraction form
    217,046.39/325,520.37 = 76,805.01/x
  3. Step 3: Cross multiply
    217,046.39x = 325,520.37 × 76,805.01
  4. Step 4: Simplify right side
    217,046.39x = 25,001,595,273.05
  5. Step 5: Solve for x
    x = 25,001,595,273.05/217,046.39
  6. Step 6: Final answer
    x = 115,190.10

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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.