Home / 309,483.12-464,249.38-131,991.72

Finding the Fourth Proportional to 309,483.12, 464,249.38 and 131,991.72

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Solution

The fourth proportional to 309,483.12, 464,249.38 and 131,991.72 is: 197,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,483.12 : 464,249.38 = 131,991.72 : x
  2. Step 2: Convert to fraction form
    309,483.12/464,249.38 = 131,991.72/x
  3. Step 3: Cross multiply
    309,483.12x = 464,249.38 × 131,991.72
  4. Step 4: Simplify right side
    309,483.12x = 61,277,074,175.13
  5. Step 5: Solve for x
    x = 61,277,074,175.13/309,483.12
  6. Step 6: Final answer
    x = 197,998.11

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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.