Home / 240,031.80-331,253.94-138,057.28

Finding the Fourth Proportional to 240,031.80, 331,253.94 and 138,057.28

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Solution

The fourth proportional to 240,031.80, 331,253.94 and 138,057.28 is: 190,524.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,031.80 : 331,253.94 = 138,057.28 : x
  2. Step 2: Convert to fraction form
    240,031.80/331,253.94 = 138,057.28/x
  3. Step 3: Cross multiply
    240,031.80x = 331,253.94 × 138,057.28
  4. Step 4: Simplify right side
    240,031.80x = 45,732,017,945.68
  5. Step 5: Solve for x
    x = 45,732,017,945.68/240,031.80
  6. Step 6: Final answer
    x = 190,524.83

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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.