Home / 279,184.12-418,778.64-79,504.36

Finding the Fourth Proportional to 279,184.12, 418,778.64 and 79,504.36

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Solution

The fourth proportional to 279,184.12, 418,778.64 and 79,504.36 is: 119,257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,184.12 : 418,778.64 = 79,504.36 : x
  2. Step 2: Convert to fraction form
    279,184.12/418,778.64 = 79,504.36/x
  3. Step 3: Cross multiply
    279,184.12x = 418,778.64 × 79,504.36
  4. Step 4: Simplify right side
    279,184.12x = 33,294,727,754.87
  5. Step 5: Solve for x
    x = 33,294,727,754.87/279,184.12
  6. Step 6: Final answer
    x = 119,257.24

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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.