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Finding the Fourth Proportional to 268,323.45, 402,498.96 and 68,645.56

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Solution

The fourth proportional to 268,323.45, 402,498.96 and 68,645.56 is: 102,971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,323.45 : 402,498.96 = 68,645.56 : x
  2. Step 2: Convert to fraction form
    268,323.45/402,498.96 = 68,645.56/x
  3. Step 3: Cross multiply
    268,323.45x = 402,498.96 × 68,645.56
  4. Step 4: Simplify right side
    268,323.45x = 27,629,766,508.62
  5. Step 5: Solve for x
    x = 27,629,766,508.62/268,323.45
  6. Step 6: Final answer
    x = 102,971.87

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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.