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Finding the Fourth Proportional to 278,835.92, 418,255.29 and 68,473.94

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Solution

The fourth proportional to 278,835.92, 418,255.29 and 68,473.94 is: 102,711.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,835.92 : 418,255.29 = 68,473.94 : x
  2. Step 2: Convert to fraction form
    278,835.92/418,255.29 = 68,473.94/x
  3. Step 3: Cross multiply
    278,835.92x = 418,255.29 × 68,473.94
  4. Step 4: Simplify right side
    278,835.92x = 28,639,587,632.14
  5. Step 5: Solve for x
    x = 28,639,587,632.14/278,835.92
  6. Step 6: Final answer
    x = 102,711.26

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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.