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Finding the Fourth Proportional to 215,627.40, 323,488.67 and 65,879.37

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Solution

The fourth proportional to 215,627.40, 323,488.67 and 65,879.37 is: 98,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,627.40 : 323,488.67 = 65,879.37 : x
  2. Step 2: Convert to fraction form
    215,627.40/323,488.67 = 65,879.37/x
  3. Step 3: Cross multiply
    215,627.40x = 323,488.67 × 65,879.37
  4. Step 4: Simplify right side
    215,627.40x = 21,311,229,452.34
  5. Step 5: Solve for x
    x = 21,311,229,452.34/215,627.40
  6. Step 6: Final answer
    x = 98,833.59

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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.