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Finding the Fourth Proportional to 209,819.58, 314,778.56 and 83,467

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Solution

The fourth proportional to 209,819.58, 314,778.56 and 83,467 is: 125,220.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,819.58 : 314,778.56 = 83,467 : x
  2. Step 2: Convert to fraction form
    209,819.58/314,778.56 = 83,467/x
  3. Step 3: Cross multiply
    209,819.58x = 314,778.56 × 83,467
  4. Step 4: Simplify right side
    209,819.58x = 26,273,622,067.52
  5. Step 5: Solve for x
    x = 26,273,622,067.52/209,819.58
  6. Step 6: Final answer
    x = 125,220.07

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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.