Home / 389,404-584,209.68-123,169.36

Finding the Fourth Proportional to 389,404, 584,209.68 and 123,169.36

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Solution

The fourth proportional to 389,404, 584,209.68 and 123,169.36 is: 184,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,404 : 584,209.68 = 123,169.36 : x
  2. Step 2: Convert to fraction form
    389,404/584,209.68 = 123,169.36/x
  3. Step 3: Cross multiply
    389,404x = 584,209.68 × 123,169.36
  4. Step 4: Simplify right side
    389,404x = 71,956,732,391.40
  5. Step 5: Solve for x
    x = 71,956,732,391.40/389,404
  6. Step 6: Final answer
    x = 184,786.83

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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.