Home / 309,453.24-464,212.18-131,979

Finding the Fourth Proportional to 309,453.24, 464,212.18 and 131,979

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Solution

The fourth proportional to 309,453.24, 464,212.18 and 131,979 is: 197,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,453.24 : 464,212.18 = 131,979 : x
  2. Step 2: Convert to fraction form
    309,453.24/464,212.18 = 131,979/x
  3. Step 3: Cross multiply
    309,453.24x = 464,212.18 × 131,979
  4. Step 4: Simplify right side
    309,453.24x = 61,266,259,304.22
  5. Step 5: Solve for x
    x = 61,266,259,304.22/309,453.24
  6. Step 6: Final answer
    x = 197,982.28

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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.