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Finding the Fourth Proportional to 490,311.52, 676,625.88 and 275,447.06

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Solution

The fourth proportional to 490,311.52, 676,625.88 and 275,447.06 is: 380,114.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,311.52 : 676,625.88 = 275,447.06 : x
  2. Step 2: Convert to fraction form
    490,311.52/676,625.88 = 275,447.06/x
  3. Step 3: Cross multiply
    490,311.52x = 676,625.88 × 275,447.06
  4. Step 4: Simplify right side
    490,311.52x = 186,374,609,365.91
  5. Step 5: Solve for x
    x = 186,374,609,365.91/490,311.52
  6. Step 6: Final answer
    x = 380,114.69

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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.