Home / 278,119.80-384,120.72-187,318.08

Finding the Fourth Proportional to 278,119.80, 384,120.72 and 187,318.08

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Solution

The fourth proportional to 278,119.80, 384,120.72 and 187,318.08 is: 258,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,119.80 : 384,120.72 = 187,318.08 : x
  2. Step 2: Convert to fraction form
    278,119.80/384,120.72 = 187,318.08/x
  3. Step 3: Cross multiply
    278,119.80x = 384,120.72 × 187,318.08
  4. Step 4: Simplify right side
    278,119.80x = 71,952,755,758.62
  5. Step 5: Solve for x
    x = 71,952,755,758.62/278,119.80
  6. Step 6: Final answer
    x = 258,711.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.