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Finding the Fourth Proportional to 485,517.65, 670,054.25 and 267,768.91

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Solution

The fourth proportional to 485,517.65, 670,054.25 and 267,768.91 is: 369,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,517.65 : 670,054.25 = 267,768.91 : x
  2. Step 2: Convert to fraction form
    485,517.65/670,054.25 = 267,768.91/x
  3. Step 3: Cross multiply
    485,517.65x = 670,054.25 × 267,768.91
  4. Step 4: Simplify right side
    485,517.65x = 179,419,696,499.66
  5. Step 5: Solve for x
    x = 179,419,696,499.66/485,517.65
  6. Step 6: Final answer
    x = 369,543.10

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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.