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Finding the Fourth Proportional to 200,614.20, 300,921.30 and 82,370.40

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Solution

The fourth proportional to 200,614.20, 300,921.30 and 82,370.40 is: 123,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,614.20 : 300,921.30 = 82,370.40 : x
  2. Step 2: Convert to fraction form
    200,614.20/300,921.30 = 82,370.40/x
  3. Step 3: Cross multiply
    200,614.20x = 300,921.30 × 82,370.40
  4. Step 4: Simplify right side
    200,614.20x = 24,787,007,849.52
  5. Step 5: Solve for x
    x = 24,787,007,849.52/200,614.20
  6. Step 6: Final answer
    x = 123,555.60

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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.