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Finding the Fourth Proportional to 345,769.66, 518,591.30 and 92,990.97

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Solution

The fourth proportional to 345,769.66, 518,591.30 and 92,990.97 is: 139,469.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,769.66 : 518,591.30 = 92,990.97 : x
  2. Step 2: Convert to fraction form
    345,769.66/518,591.30 = 92,990.97/x
  3. Step 3: Cross multiply
    345,769.66x = 518,591.30 × 92,990.97
  4. Step 4: Simplify right side
    345,769.66x = 48,224,307,555.61
  5. Step 5: Solve for x
    x = 48,224,307,555.61/345,769.66
  6. Step 6: Final answer
    x = 139,469.46

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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.