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Finding the Fourth Proportional to 272,383.02, 408,640.14 and 85,394.52

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Solution

The fourth proportional to 272,383.02, 408,640.14 and 85,394.52 is: 128,112.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,383.02 : 408,640.14 = 85,394.52 : x
  2. Step 2: Convert to fraction form
    272,383.02/408,640.14 = 85,394.52/x
  3. Step 3: Cross multiply
    272,383.02x = 408,640.14 × 85,394.52
  4. Step 4: Simplify right side
    272,383.02x = 34,895,628,608.03
  5. Step 5: Solve for x
    x = 34,895,628,608.03/272,383.02
  6. Step 6: Final answer
    x = 128,112.35

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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.