Home / 279,986.30-419,979.45-92,997.80

Finding the Fourth Proportional to 279,986.30, 419,979.45 and 92,997.80

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Solution

The fourth proportional to 279,986.30, 419,979.45 and 92,997.80 is: 139,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,986.30 : 419,979.45 = 92,997.80 : x
  2. Step 2: Convert to fraction form
    279,986.30/419,979.45 = 92,997.80/x
  3. Step 3: Cross multiply
    279,986.30x = 419,979.45 × 92,997.80
  4. Step 4: Simplify right side
    279,986.30x = 39,057,164,895.21
  5. Step 5: Solve for x
    x = 39,057,164,895.21/279,986.30
  6. Step 6: Final answer
    x = 139,496.70

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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.