Home / 279,331.14-418,998.83-79,651.35

Finding the Fourth Proportional to 279,331.14, 418,998.83 and 79,651.35

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Solution

The fourth proportional to 279,331.14, 418,998.83 and 79,651.35 is: 119,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,331.14 : 418,998.83 = 79,651.35 : x
  2. Step 2: Convert to fraction form
    279,331.14/418,998.83 = 79,651.35/x
  3. Step 3: Cross multiply
    279,331.14x = 418,998.83 × 79,651.35
  4. Step 4: Simplify right side
    279,331.14x = 33,373,823,505.42
  5. Step 5: Solve for x
    x = 33,373,823,505.42/279,331.14
  6. Step 6: Final answer
    x = 119,477.64

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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.