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Finding the Fourth Proportional to 208,958.23, 313,459.22 and 68,727.79

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Solution

The fourth proportional to 208,958.23, 313,459.22 and 68,727.79 is: 103,098.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,958.23 : 313,459.22 = 68,727.79 : x
  2. Step 2: Convert to fraction form
    208,958.23/313,459.22 = 68,727.79/x
  3. Step 3: Cross multiply
    208,958.23x = 313,459.22 × 68,727.79
  4. Step 4: Simplify right side
    208,958.23x = 21,543,359,445.72
  5. Step 5: Solve for x
    x = 21,543,359,445.72/208,958.23
  6. Step 6: Final answer
    x = 103,098.88

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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.