Home / 209,213.81-313,802.91-82,819.69

Finding the Fourth Proportional to 209,213.81, 313,802.91 and 82,819.69

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Solution

The fourth proportional to 209,213.81, 313,802.91 and 82,819.69 is: 124,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,213.81 : 313,802.91 = 82,819.69 : x
  2. Step 2: Convert to fraction form
    209,213.81/313,802.91 = 82,819.69/x
  3. Step 3: Cross multiply
    209,213.81x = 313,802.91 × 82,819.69
  4. Step 4: Simplify right side
    209,213.81x = 25,989,058,942.79
  5. Step 5: Solve for x
    x = 25,989,058,942.79/209,213.81
  6. Step 6: Final answer
    x = 124,222.48

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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.