Home / 245,651.33-338,998.23-138,221.51

Finding the Fourth Proportional to 245,651.33, 338,998.23 and 138,221.51

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Solution

The fourth proportional to 245,651.33, 338,998.23 and 138,221.51 is: 190,745.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,651.33 : 338,998.23 = 138,221.51 : x
  2. Step 2: Convert to fraction form
    245,651.33/338,998.23 = 138,221.51/x
  3. Step 3: Cross multiply
    245,651.33x = 338,998.23 × 138,221.51
  4. Step 4: Simplify right side
    245,651.33x = 46,856,845,542.94
  5. Step 5: Solve for x
    x = 46,856,845,542.94/245,651.33
  6. Step 6: Final answer
    x = 190,745.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.