Home / 257,828.24-386,761-107,917.76

Finding the Fourth Proportional to 257,828.24, 386,761 and 107,917.76

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Solution

The fourth proportional to 257,828.24, 386,761 and 107,917.76 is: 161,884.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,828.24 : 386,761 = 107,917.76 : x
  2. Step 2: Convert to fraction form
    257,828.24/386,761 = 107,917.76/x
  3. Step 3: Cross multiply
    257,828.24x = 386,761 × 107,917.76
  4. Step 4: Simplify right side
    257,828.24x = 41,738,380,775.36
  5. Step 5: Solve for x
    x = 41,738,380,775.36/257,828.24
  6. Step 6: Final answer
    x = 161,884.44

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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.