Home / 209,213.24-313,802.07-82,819.12

Finding the Fourth Proportional to 209,213.24, 313,802.07 and 82,819.12

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Solution

The fourth proportional to 209,213.24, 313,802.07 and 82,819.12 is: 124,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,213.24 : 313,802.07 = 82,819.12 : x
  2. Step 2: Convert to fraction form
    209,213.24/313,802.07 = 82,819.12/x
  3. Step 3: Cross multiply
    209,213.24x = 313,802.07 × 82,819.12
  4. Step 4: Simplify right side
    209,213.24x = 25,988,811,291.58
  5. Step 5: Solve for x
    x = 25,988,811,291.58/209,213.24
  6. Step 6: Final answer
    x = 124,221.64

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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.