Home / 240,382.79-331,738.28-138,405.71

Finding the Fourth Proportional to 240,382.79, 331,738.28 and 138,405.71

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Solution

The fourth proportional to 240,382.79, 331,738.28 and 138,405.71 is: 191,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,382.79 : 331,738.28 = 138,405.71 : x
  2. Step 2: Convert to fraction form
    240,382.79/331,738.28 = 138,405.71/x
  3. Step 3: Cross multiply
    240,382.79x = 331,738.28 × 138,405.71
  4. Step 4: Simplify right side
    240,382.79x = 45,914,469,826.86
  5. Step 5: Solve for x
    x = 45,914,469,826.86/240,382.79
  6. Step 6: Final answer
    x = 191,005.65

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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.