Home / 217,749.69-326,645.19-84,640.23

Finding the Fourth Proportional to 217,749.69, 326,645.19 and 84,640.23

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Solution

The fourth proportional to 217,749.69, 326,645.19 and 84,640.23 is: 126,968.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,749.69 : 326,645.19 = 84,640.23 : x
  2. Step 2: Convert to fraction form
    217,749.69/326,645.19 = 84,640.23/x
  3. Step 3: Cross multiply
    217,749.69x = 326,645.19 × 84,640.23
  4. Step 4: Simplify right side
    217,749.69x = 27,647,324,009.99
  5. Step 5: Solve for x
    x = 27,647,324,009.99/217,749.69
  6. Step 6: Final answer
    x = 126,968.37

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1.5x scale

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.