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Finding the Fourth Proportional to 490,168.11, 676,495.43 and 275,308.17

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Solution

The fourth proportional to 490,168.11, 676,495.43 and 275,308.17 is: 379,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,168.11 : 676,495.43 = 275,308.17 : x
  2. Step 2: Convert to fraction form
    490,168.11/676,495.43 = 275,308.17/x
  3. Step 3: Cross multiply
    490,168.11x = 676,495.43 × 275,308.17
  4. Step 4: Simplify right side
    490,168.11x = 186,244,717,470.12
  5. Step 5: Solve for x
    x = 186,244,717,470.12/490,168.11
  6. Step 6: Final answer
    x = 379,960.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.