Home / 240,150.41-331,398.31-138,208.61

Finding the Fourth Proportional to 240,150.41, 331,398.31 and 138,208.61

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Solution

The fourth proportional to 240,150.41, 331,398.31 and 138,208.61 is: 190,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,150.41 : 331,398.31 = 138,208.61 : x
  2. Step 2: Convert to fraction form
    240,150.41/331,398.31 = 138,208.61/x
  3. Step 3: Cross multiply
    240,150.41x = 331,398.31 × 138,208.61
  4. Step 4: Simplify right side
    240,150.41x = 45,802,099,781.45
  5. Step 5: Solve for x
    x = 45,802,099,781.45/240,150.41
  6. Step 6: Final answer
    x = 190,722.56

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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.