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Finding the Fourth Proportional to 217,595.56, 326,324.22 and 69,817

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Solution

The fourth proportional to 217,595.56, 326,324.22 and 69,817 is: 104,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,595.56 : 326,324.22 = 69,817 : x
  2. Step 2: Convert to fraction form
    217,595.56/326,324.22 = 69,817/x
  3. Step 3: Cross multiply
    217,595.56x = 326,324.22 × 69,817
  4. Step 4: Simplify right side
    217,595.56x = 22,782,978,067.74
  5. Step 5: Solve for x
    x = 22,782,978,067.74/217,595.56
  6. Step 6: Final answer
    x = 104,703.32

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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.