Home / 272,383.07-408,640.19-85,394.57

Finding the Fourth Proportional to 272,383.07, 408,640.19 and 85,394.57

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Solution

The fourth proportional to 272,383.07, 408,640.19 and 85,394.57 is: 128,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,383.07 : 408,640.19 = 85,394.57 : x
  2. Step 2: Convert to fraction form
    272,383.07/408,640.19 = 85,394.57/x
  3. Step 3: Cross multiply
    272,383.07x = 408,640.19 × 85,394.57
  4. Step 4: Simplify right side
    272,383.07x = 34,895,650,839.59
  5. Step 5: Solve for x
    x = 34,895,650,839.59/272,383.07
  6. Step 6: Final answer
    x = 128,112.41

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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.