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Finding the Fourth Proportional to 490,247.73, 676,504.98 and 275,345.82

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Solution

The fourth proportional to 490,247.73, 676,504.98 and 275,345.82 is: 379,956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,247.73 : 676,504.98 = 275,345.82 : x
  2. Step 2: Convert to fraction form
    490,247.73/676,504.98 = 275,345.82/x
  3. Step 3: Cross multiply
    490,247.73x = 676,504.98 × 275,345.82
  4. Step 4: Simplify right side
    490,247.73x = 186,272,818,452.18
  5. Step 5: Solve for x
    x = 186,272,818,452.18/490,247.73
  6. Step 6: Final answer
    x = 379,956.51

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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.