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Finding the Fourth Proportional to 351,707.82, 485,292.88 and 196,661.90

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Solution

The fourth proportional to 351,707.82, 485,292.88 and 196,661.90 is: 271,357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,707.82 : 485,292.88 = 196,661.90 : x
  2. Step 2: Convert to fraction form
    351,707.82/485,292.88 = 196,661.90/x
  3. Step 3: Cross multiply
    351,707.82x = 485,292.88 × 196,661.90
  4. Step 4: Simplify right side
    351,707.82x = 95,438,621,121.25
  5. Step 5: Solve for x
    x = 95,438,621,121.25/351,707.82
  6. Step 6: Final answer
    x = 271,357.69

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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.