Home / 392,738.64-588,893.84-139,979.76

Finding the Fourth Proportional to 392,738.64, 588,893.84 and 139,979.76

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Solution

The fourth proportional to 392,738.64, 588,893.84 and 139,979.76 is: 209,893.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,738.64 : 588,893.84 = 139,979.76 : x
  2. Step 2: Convert to fraction form
    392,738.64/588,893.84 = 139,979.76/x
  3. Step 3: Cross multiply
    392,738.64x = 588,893.84 × 139,979.76
  4. Step 4: Simplify right side
    392,738.64x = 82,433,218,388.68
  5. Step 5: Solve for x
    x = 82,433,218,388.68/392,738.64
  6. Step 6: Final answer
    x = 209,893.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.