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Finding the Fourth Proportional to 436,207.66, 654,311.72 and 136,711.56

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Solution

The fourth proportional to 436,207.66, 654,311.72 and 136,711.56 is: 205,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,207.66 : 654,311.72 = 136,711.56 : x
  2. Step 2: Convert to fraction form
    436,207.66/654,311.72 = 136,711.56/x
  3. Step 3: Cross multiply
    436,207.66x = 654,311.72 × 136,711.56
  4. Step 4: Simplify right side
    436,207.66x = 89,451,978,762.93
  5. Step 5: Solve for x
    x = 89,451,978,762.93/436,207.66
  6. Step 6: Final answer
    x = 205,067.42

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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.