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Finding the Fourth Proportional to 490,388.91, 676,737.27 and 275,528.85

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Solution

The fourth proportional to 490,388.91, 676,737.27 and 275,528.85 is: 380,230.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,388.91 : 676,737.27 = 275,528.85 : x
  2. Step 2: Convert to fraction form
    490,388.91/676,737.27 = 275,528.85/x
  3. Step 3: Cross multiply
    490,388.91x = 676,737.27 × 275,528.85
  4. Step 4: Simplify right side
    490,388.91x = 186,460,641,755.24
  5. Step 5: Solve for x
    x = 186,460,641,755.24/490,388.91
  6. Step 6: Final answer
    x = 380,230.14

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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.