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Finding the Fourth Proportional to 407,636.85, 610,789.42 and 247,761.69

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Solution

The fourth proportional to 407,636.85, 610,789.42 and 247,761.69 is: 371,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,636.85 : 610,789.42 = 247,761.69 : x
  2. Step 2: Convert to fraction form
    407,636.85/610,789.42 = 247,761.69/x
  3. Step 3: Cross multiply
    407,636.85x = 610,789.42 × 247,761.69
  4. Step 4: Simplify right side
    407,636.85x = 151,330,218,933.32
  5. Step 5: Solve for x
    x = 151,330,218,933.32/407,636.85
  6. Step 6: Final answer
    x = 371,237.83

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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.