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Finding the Fourth Proportional to 220,791.87, 304,732.67 and 130,142.61

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Solution

The fourth proportional to 220,791.87, 304,732.67 and 130,142.61 is: 179,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,791.87 : 304,732.67 = 130,142.61 : x
  2. Step 2: Convert to fraction form
    220,791.87/304,732.67 = 130,142.61/x
  3. Step 3: Cross multiply
    220,791.87x = 304,732.67 × 130,142.61
  4. Step 4: Simplify right side
    220,791.87x = 39,658,704,375.36
  5. Step 5: Solve for x
    x = 39,658,704,375.36/220,791.87
  6. Step 6: Final answer
    x = 179,620.31

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1.5x scale

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.