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Finding the Fourth Proportional to 479,237.80, 718,733.64 and 142,198.73

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Solution

The fourth proportional to 479,237.80, 718,733.64 and 142,198.73 is: 213,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,237.80 : 718,733.64 = 142,198.73 : x
  2. Step 2: Convert to fraction form
    479,237.80/718,733.64 = 142,198.73/x
  3. Step 3: Cross multiply
    479,237.80x = 718,733.64 × 142,198.73
  4. Step 4: Simplify right side
    479,237.80x = 102,203,010,816.28
  5. Step 5: Solve for x
    x = 102,203,010,816.28/479,237.80
  6. Step 6: Final answer
    x = 213,261.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.