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Finding the Fourth Proportional to 479,246, 661,359.48 and 267,278

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Solution

The fourth proportional to 479,246, 661,359.48 and 267,278 is: 368,843.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,246 : 661,359.48 = 267,278 : x
  2. Step 2: Convert to fraction form
    479,246/661,359.48 = 267,278/x
  3. Step 3: Cross multiply
    479,246x = 661,359.48 × 267,278
  4. Step 4: Simplify right side
    479,246x = 176,766,839,095.44
  5. Step 5: Solve for x
    x = 176,766,839,095.44/479,246
  6. Step 6: Final answer
    x = 368,843.64

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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.