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Finding the Fourth Proportional to 490,297.25, 676,606.13 and 275,432.70

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Solution

The fourth proportional to 490,297.25, 676,606.13 and 275,432.70 is: 380,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,297.25 : 676,606.13 = 275,432.70 : x
  2. Step 2: Convert to fraction form
    490,297.25/676,606.13 = 275,432.70/x
  3. Step 3: Cross multiply
    490,297.25x = 676,606.13 × 275,432.70
  4. Step 4: Simplify right side
    490,297.25x = 186,359,455,415.43
  5. Step 5: Solve for x
    x = 186,359,455,415.43/490,297.25
  6. Step 6: Final answer
    x = 380,094.84

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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.