Home / 245,995.31-339,428.43-138,542.33

Finding the Fourth Proportional to 245,995.31, 339,428.43 and 138,542.33

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Solution

The fourth proportional to 245,995.31, 339,428.43 and 138,542.33 is: 191,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,995.31 : 339,428.43 = 138,542.33 : x
  2. Step 2: Convert to fraction form
    245,995.31/339,428.43 = 138,542.33/x
  3. Step 3: Cross multiply
    245,995.31x = 339,428.43 × 138,542.33
  4. Step 4: Simplify right side
    245,995.31x = 47,025,203,863.30
  5. Step 5: Solve for x
    x = 47,025,203,863.30/245,995.31
  6. Step 6: Final answer
    x = 191,163.01

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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.