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Finding the Fourth Proportional to 209,297.87, 313,917.23 and 67,124.66

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Solution

The fourth proportional to 209,297.87, 313,917.23 and 67,124.66 is: 100,677.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,297.87 : 313,917.23 = 67,124.66 : x
  2. Step 2: Convert to fraction form
    209,297.87/313,917.23 = 67,124.66/x
  3. Step 3: Cross multiply
    209,297.87x = 313,917.23 × 67,124.66
  4. Step 4: Simplify right side
    209,297.87x = 21,071,587,781.06
  5. Step 5: Solve for x
    x = 21,071,587,781.06/209,297.87
  6. Step 6: Final answer
    x = 100,677.51

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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.