Home / 431,286.42-647,028.04-131,809.58

Finding the Fourth Proportional to 431,286.42, 647,028.04 and 131,809.58

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Solution

The fourth proportional to 431,286.42, 647,028.04 and 131,809.58 is: 197,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,286.42 : 647,028.04 = 131,809.58 : x
  2. Step 2: Convert to fraction form
    431,286.42/647,028.04 = 131,809.58/x
  3. Step 3: Cross multiply
    431,286.42x = 647,028.04 × 131,809.58
  4. Step 4: Simplify right side
    431,286.42x = 85,284,494,200.62
  5. Step 5: Solve for x
    x = 85,284,494,200.62/431,286.42
  6. Step 6: Final answer
    x = 197,744.45

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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.