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Finding the Fourth Proportional to 247,078.44, 370,613.98 and 78,609

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Solution

The fourth proportional to 247,078.44, 370,613.98 and 78,609 is: 117,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,078.44 : 370,613.98 = 78,609 : x
  2. Step 2: Convert to fraction form
    247,078.44/370,613.98 = 78,609/x
  3. Step 3: Cross multiply
    247,078.44x = 370,613.98 × 78,609
  4. Step 4: Simplify right side
    247,078.44x = 29,133,594,353.82
  5. Step 5: Solve for x
    x = 29,133,594,353.82/247,078.44
  6. Step 6: Final answer
    x = 117,912.33

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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.