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Finding the Fourth Proportional to 345,474, 518,211 and 96,162.48

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Solution

The fourth proportional to 345,474, 518,211 and 96,162.48 is: 144,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,474 : 518,211 = 96,162.48 : x
  2. Step 2: Convert to fraction form
    345,474/518,211 = 96,162.48/x
  3. Step 3: Cross multiply
    345,474x = 518,211 × 96,162.48
  4. Step 4: Simplify right side
    345,474x = 49,832,454,923.28
  5. Step 5: Solve for x
    x = 49,832,454,923.28/345,474
  6. Step 6: Final answer
    x = 144,243.72

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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.