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Finding the Fourth Proportional to 485,067.61, 669,414 and 270,207.82

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Solution

The fourth proportional to 485,067.61, 669,414 and 270,207.82 is: 372,898.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,067.61 : 669,414 = 270,207.82 : x
  2. Step 2: Convert to fraction form
    485,067.61/669,414 = 270,207.82/x
  3. Step 3: Cross multiply
    485,067.61x = 669,414 × 270,207.82
  4. Step 4: Simplify right side
    485,067.61x = 180,880,897,617.48
  5. Step 5: Solve for x
    x = 180,880,897,617.48/485,067.61
  6. Step 6: Final answer
    x = 372,898.32

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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.