Home / 431,416.98-647,127.18-131,896.26

Finding the Fourth Proportional to 431,416.98, 647,127.18 and 131,896.26

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Solution

The fourth proportional to 431,416.98, 647,127.18 and 131,896.26 is: 197,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,416.98 : 647,127.18 = 131,896.26 : x
  2. Step 2: Convert to fraction form
    431,416.98/647,127.18 = 131,896.26/x
  3. Step 3: Cross multiply
    431,416.98x = 647,127.18 × 131,896.26
  4. Step 4: Simplify right side
    431,416.98x = 85,353,654,786.35
  5. Step 5: Solve for x
    x = 85,353,654,786.35/431,416.98
  6. Step 6: Final answer
    x = 197,844.91

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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.