Home / 217,788.31-326,245.05-99,296.65

Finding the Fourth Proportional to 217,788.31, 326,245.05 and 99,296.65

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Solution

The fourth proportional to 217,788.31, 326,245.05 and 99,296.65 is: 148,745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,788.31 : 326,245.05 = 99,296.65 : x
  2. Step 2: Convert to fraction form
    217,788.31/326,245.05 = 99,296.65/x
  3. Step 3: Cross multiply
    217,788.31x = 326,245.05 × 99,296.65
  4. Step 4: Simplify right side
    217,788.31x = 32,395,039,161.10
  5. Step 5: Solve for x
    x = 32,395,039,161.10/217,788.31
  6. Step 6: Final answer
    x = 148,745.54

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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.