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Finding the Fourth Proportional to 308,463.75, 462,763.67 and 131,122.35

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Solution

The fourth proportional to 308,463.75, 462,763.67 and 131,122.35 is: 196,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,463.75 : 462,763.67 = 131,122.35 : x
  2. Step 2: Convert to fraction form
    308,463.75/462,763.67 = 131,122.35/x
  3. Step 3: Cross multiply
    308,463.75x = 462,763.67 × 131,122.35
  4. Step 4: Simplify right side
    308,463.75x = 60,678,659,249.41
  5. Step 5: Solve for x
    x = 60,678,659,249.41/308,463.75
  6. Step 6: Final answer
    x = 196,712.45

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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.