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Finding the Fourth Proportional to 627,039.38, 940,808.30 and 200,640.90

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Solution

The fourth proportional to 627,039.38, 940,808.30 and 200,640.90 is: 301,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,039.38 : 940,808.30 = 200,640.90 : x
  2. Step 2: Convert to fraction form
    627,039.38/940,808.30 = 200,640.90/x
  3. Step 3: Cross multiply
    627,039.38x = 940,808.30 × 200,640.90
  4. Step 4: Simplify right side
    627,039.38x = 188,764,623,036.27
  5. Step 5: Solve for x
    x = 188,764,623,036.27/627,039.38
  6. Step 6: Final answer
    x = 301,041.10

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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.