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Finding the Fourth Proportional to 483,720.88, 667,481.68 and 279,741.28

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Solution

The fourth proportional to 483,720.88, 667,481.68 and 279,741.28 is: 386,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,720.88 : 667,481.68 = 279,741.28 : x
  2. Step 2: Convert to fraction form
    483,720.88/667,481.68 = 279,741.28/x
  3. Step 3: Cross multiply
    483,720.88x = 667,481.68 × 279,741.28
  4. Step 4: Simplify right side
    483,720.88x = 186,722,179,539.75
  5. Step 5: Solve for x
    x = 186,722,179,539.75/483,720.88
  6. Step 6: Final answer
    x = 386,012.24

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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.