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Finding the Fourth Proportional to 485,642.28, 670,194.72 and 267,876

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Solution

The fourth proportional to 485,642.28, 670,194.72 and 267,876 is: 369,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,642.28 : 670,194.72 = 267,876 : x
  2. Step 2: Convert to fraction form
    485,642.28/670,194.72 = 267,876/x
  3. Step 3: Cross multiply
    485,642.28x = 670,194.72 × 267,876
  4. Step 4: Simplify right side
    485,642.28x = 179,529,080,814.72
  5. Step 5: Solve for x
    x = 179,529,080,814.72/485,642.28
  6. Step 6: Final answer
    x = 369,673.50

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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.