Home / 257,819.70-386,729.55-108,010.20

Finding the Fourth Proportional to 257,819.70, 386,729.55 and 108,010.20

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Solution

The fourth proportional to 257,819.70, 386,729.55 and 108,010.20 is: 162,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,819.70 : 386,729.55 = 108,010.20 : x
  2. Step 2: Convert to fraction form
    257,819.70/386,729.55 = 108,010.20/x
  3. Step 3: Cross multiply
    257,819.70x = 386,729.55 × 108,010.20
  4. Step 4: Simplify right side
    257,819.70x = 41,770,736,041.41
  5. Step 5: Solve for x
    x = 41,770,736,041.41/257,819.70
  6. Step 6: Final answer
    x = 162,015.30

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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.