Home / 261,768.42-361,255.59-197,121.90

Finding the Fourth Proportional to 261,768.42, 361,255.59 and 197,121.90

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Solution

The fourth proportional to 261,768.42, 361,255.59 and 197,121.90 is: 272,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,768.42 : 361,255.59 = 197,121.90 : x
  2. Step 2: Convert to fraction form
    261,768.42/361,255.59 = 197,121.90/x
  3. Step 3: Cross multiply
    261,768.42x = 361,255.59 × 197,121.90
  4. Step 4: Simplify right side
    261,768.42x = 71,211,388,286.42
  5. Step 5: Solve for x
    x = 71,211,388,286.42/261,768.42
  6. Step 6: Final answer
    x = 272,039.65

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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.