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Finding the Fourth Proportional to 308,242.44, 462,363.66 and 86,626.44

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Solution

The fourth proportional to 308,242.44, 462,363.66 and 86,626.44 is: 129,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,242.44 : 462,363.66 = 86,626.44 : x
  2. Step 2: Convert to fraction form
    308,242.44/462,363.66 = 86,626.44/x
  3. Step 3: Cross multiply
    308,242.44x = 462,363.66 × 86,626.44
  4. Step 4: Simplify right side
    308,242.44x = 40,052,917,418.04
  5. Step 5: Solve for x
    x = 40,052,917,418.04/308,242.44
  6. Step 6: Final answer
    x = 129,939.66

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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.