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Finding the Fourth Proportional to 272,451.60, 408,288.60 and 200,815.20

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Solution

The fourth proportional to 272,451.60, 408,288.60 and 200,815.20 is: 300,936.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,451.60 : 408,288.60 = 200,815.20 : x
  2. Step 2: Convert to fraction form
    272,451.60/408,288.60 = 200,815.20/x
  3. Step 3: Cross multiply
    272,451.60x = 408,288.60 × 200,815.20
  4. Step 4: Simplify right side
    272,451.60x = 81,990,556,866.72
  5. Step 5: Solve for x
    x = 81,990,556,866.72/272,451.60
  6. Step 6: Final answer
    x = 300,936.23

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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.