Home / 280,608.20-420,953.82-103,101.38

Finding the Fourth Proportional to 280,608.20, 420,953.82 and 103,101.38

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Solution

The fourth proportional to 280,608.20, 420,953.82 and 103,101.38 is: 154,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,608.20 : 420,953.82 = 103,101.38 : x
  2. Step 2: Convert to fraction form
    280,608.20/420,953.82 = 103,101.38/x
  3. Step 3: Cross multiply
    280,608.20x = 420,953.82 × 103,101.38
  4. Step 4: Simplify right side
    280,608.20x = 43,400,919,758.27
  5. Step 5: Solve for x
    x = 43,400,919,758.27/280,608.20
  6. Step 6: Final answer
    x = 154,667.33

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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.