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Finding the Fourth Proportional to 397,820.91, 548,611.25 and 267,293.74

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Solution

The fourth proportional to 397,820.91, 548,611.25 and 267,293.74 is: 368,608.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,820.91 : 548,611.25 = 267,293.74 : x
  2. Step 2: Convert to fraction form
    397,820.91/548,611.25 = 267,293.74/x
  3. Step 3: Cross multiply
    397,820.91x = 548,611.25 × 267,293.74
  4. Step 4: Simplify right side
    397,820.91x = 146,640,352,818.58
  5. Step 5: Solve for x
    x = 146,640,352,818.58/397,820.91
  6. Step 6: Final answer
    x = 368,608.96

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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.