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Finding the Fourth Proportional to 247,449.32, 371,169.42 and 78,968.31

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Solution

The fourth proportional to 247,449.32, 371,169.42 and 78,968.31 is: 118,451.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,449.32 : 371,169.42 = 78,968.31 : x
  2. Step 2: Convert to fraction form
    247,449.32/371,169.42 = 78,968.31/x
  3. Step 3: Cross multiply
    247,449.32x = 371,169.42 × 78,968.31
  4. Step 4: Simplify right side
    247,449.32x = 29,310,621,821.08
  5. Step 5: Solve for x
    x = 29,310,621,821.08/247,449.32
  6. Step 6: Final answer
    x = 118,451.01

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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.