Home / 431,287.42-647,029.55-131,810.58

Finding the Fourth Proportional to 431,287.42, 647,029.55 and 131,810.58

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Solution

The fourth proportional to 431,287.42, 647,029.55 and 131,810.58 is: 197,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,287.42 : 647,029.55 = 131,810.58 : x
  2. Step 2: Convert to fraction form
    431,287.42/647,029.55 = 131,810.58/x
  3. Step 3: Cross multiply
    431,287.42x = 647,029.55 × 131,810.58
  4. Step 4: Simplify right side
    431,287.42x = 85,285,336,368.44
  5. Step 5: Solve for x
    x = 85,285,336,368.44/431,287.42
  6. Step 6: Final answer
    x = 197,745.94

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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.