Home / 402,564.38-555,540.24-221,292.04

Finding the Fourth Proportional to 402,564.38, 555,540.24 and 221,292.04

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Solution

The fourth proportional to 402,564.38, 555,540.24 and 221,292.04 is: 305,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,564.38 : 555,540.24 = 221,292.04 : x
  2. Step 2: Convert to fraction form
    402,564.38/555,540.24 = 221,292.04/x
  3. Step 3: Cross multiply
    402,564.38x = 555,540.24 × 221,292.04
  4. Step 4: Simplify right side
    402,564.38x = 122,936,633,011.69
  5. Step 5: Solve for x
    x = 122,936,633,011.69/402,564.38
  6. Step 6: Final answer
    x = 305,383.78

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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.