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Finding the Fourth Proportional to 397,495.23, 548,493.57 and 268,713.90

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Solution

The fourth proportional to 397,495.23, 548,493.57 and 268,713.90 is: 370,791.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,495.23 : 548,493.57 = 268,713.90 : x
  2. Step 2: Convert to fraction form
    397,495.23/548,493.57 = 268,713.90/x
  3. Step 3: Cross multiply
    397,495.23x = 548,493.57 × 268,713.90
  4. Step 4: Simplify right side
    397,495.23x = 147,387,846,319.62
  5. Step 5: Solve for x
    x = 147,387,846,319.62/397,495.23
  6. Step 6: Final answer
    x = 370,791.48

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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.