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Finding the Fourth Proportional to 490,047.47, 676,265.56 and 275,187.68

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Solution

The fourth proportional to 490,047.47, 676,265.56 and 275,187.68 is: 379,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,047.47 : 676,265.56 = 275,187.68 : x
  2. Step 2: Convert to fraction form
    490,047.47/676,265.56 = 275,187.68/x
  3. Step 3: Cross multiply
    490,047.47x = 676,265.56 × 275,187.68
  4. Step 4: Simplify right side
    490,047.47x = 186,099,948,987.00
  5. Step 5: Solve for x
    x = 186,099,948,987.00/490,047.47
  6. Step 6: Final answer
    x = 379,759.03

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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.