Home / 240,198.80-331,507.31-138,222.18

Finding the Fourth Proportional to 240,198.80, 331,507.31 and 138,222.18

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Solution

The fourth proportional to 240,198.80, 331,507.31 and 138,222.18 is: 190,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,198.80 : 331,507.31 = 138,222.18 : x
  2. Step 2: Convert to fraction form
    240,198.80/331,507.31 = 138,222.18/x
  3. Step 3: Cross multiply
    240,198.80x = 331,507.31 × 138,222.18
  4. Step 4: Simplify right side
    240,198.80x = 45,821,662,383.02
  5. Step 5: Solve for x
    x = 45,821,662,383.02/240,198.80
  6. Step 6: Final answer
    x = 190,765.57

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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.