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Finding the Fourth Proportional to 200,722.20, 300,828.15 and 82,259.70

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Solution

The fourth proportional to 200,722.20, 300,828.15 and 82,259.70 is: 123,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,722.20 : 300,828.15 = 82,259.70 : x
  2. Step 2: Convert to fraction form
    200,722.20/300,828.15 = 82,259.70/x
  3. Step 3: Cross multiply
    200,722.20x = 300,828.15 × 82,259.70
  4. Step 4: Simplify right side
    200,722.20x = 24,746,033,370.56
  5. Step 5: Solve for x
    x = 24,746,033,370.56/200,722.20
  6. Step 6: Final answer
    x = 123,284.98

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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.