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Finding the Fourth Proportional to 405,589.92, 608,073.84 and 247,892.64

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Solution

The fourth proportional to 405,589.92, 608,073.84 and 247,892.64 is: 371,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,589.92 : 608,073.84 = 247,892.64 : x
  2. Step 2: Convert to fraction form
    405,589.92/608,073.84 = 247,892.64/x
  3. Step 3: Cross multiply
    405,589.92x = 608,073.84 × 247,892.64
  4. Step 4: Simplify right side
    405,589.92x = 150,737,029,512.54
  5. Step 5: Solve for x
    x = 150,737,029,512.54/405,589.92
  6. Step 6: Final answer
    x = 371,648.86

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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.