Home / 415,209.20-622,592.33-215,033.09

Finding the Fourth Proportional to 415,209.20, 622,592.33 and 215,033.09

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Solution

The fourth proportional to 415,209.20, 622,592.33 and 215,033.09 is: 322,434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,209.20 : 622,592.33 = 215,033.09 : x
  2. Step 2: Convert to fraction form
    415,209.20/622,592.33 = 215,033.09/x
  3. Step 3: Cross multiply
    415,209.20x = 622,592.33 × 215,033.09
  4. Step 4: Simplify right side
    415,209.20x = 133,877,948,342.07
  5. Step 5: Solve for x
    x = 133,877,948,342.07/415,209.20
  6. Step 6: Final answer
    x = 322,434.93

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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.