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Finding the Fourth Proportional to 485,074.26, 669,422.66 and 270,214.28

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Solution

The fourth proportional to 485,074.26, 669,422.66 and 270,214.28 is: 372,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,074.26 : 669,422.66 = 270,214.28 : x
  2. Step 2: Convert to fraction form
    485,074.26/669,422.66 = 270,214.28/x
  3. Step 3: Cross multiply
    485,074.26x = 669,422.66 × 270,214.28
  4. Step 4: Simplify right side
    485,074.26x = 180,887,562,087.59
  5. Step 5: Solve for x
    x = 180,887,562,087.59/485,074.26
  6. Step 6: Final answer
    x = 372,906.95

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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.