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Finding the Fourth Proportional to 274,904.40, 412,356.60 and 204,920.40

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Solution

The fourth proportional to 274,904.40, 412,356.60 and 204,920.40 is: 307,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,904.40 : 412,356.60 = 204,920.40 : x
  2. Step 2: Convert to fraction form
    274,904.40/412,356.60 = 204,920.40/x
  3. Step 3: Cross multiply
    274,904.40x = 412,356.60 × 204,920.40
  4. Step 4: Simplify right side
    274,904.40x = 84,500,279,414.64
  5. Step 5: Solve for x
    x = 84,500,279,414.64/274,904.40
  6. Step 6: Final answer
    x = 307,380.60

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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.