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Finding the Fourth Proportional to 490,158.90, 676,419.39 and 275,293.44

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Solution

The fourth proportional to 490,158.90, 676,419.39 and 275,293.44 is: 379,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,158.90 : 676,419.39 = 275,293.44 : x
  2. Step 2: Convert to fraction form
    490,158.90/676,419.39 = 275,293.44/x
  3. Step 3: Cross multiply
    490,158.90x = 676,419.39 × 275,293.44
  4. Step 4: Simplify right side
    490,158.90x = 186,213,820,755.80
  5. Step 5: Solve for x
    x = 186,213,820,755.80/490,158.90
  6. Step 6: Final answer
    x = 379,905.01

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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.