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Finding the Fourth Proportional to 248,510, 342,976.20 and 147,908

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Solution

The fourth proportional to 248,510, 342,976.20 and 147,908 is: 204,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,510 : 342,976.20 = 147,908 : x
  2. Step 2: Convert to fraction form
    248,510/342,976.20 = 147,908/x
  3. Step 3: Cross multiply
    248,510x = 342,976.20 × 147,908
  4. Step 4: Simplify right side
    248,510x = 50,728,923,789.60
  5. Step 5: Solve for x
    x = 50,728,923,789.60/248,510
  6. Step 6: Final answer
    x = 204,132.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.