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Finding the Fourth Proportional to 490,367.66, 676,728.27 and 275,508.14

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Solution

The fourth proportional to 490,367.66, 676,728.27 and 275,508.14 is: 380,212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,367.66 : 676,728.27 = 275,508.14 : x
  2. Step 2: Convert to fraction form
    490,367.66/676,728.27 = 275,508.14/x
  3. Step 3: Cross multiply
    490,367.66x = 676,728.27 × 275,508.14
  4. Step 4: Simplify right side
    490,367.66x = 186,444,143,569.48
  5. Step 5: Solve for x
    x = 186,444,143,569.48/490,367.66
  6. Step 6: Final answer
    x = 380,212.97

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1.5x scale

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.