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Finding the Fourth Proportional to 543,906.02, 815,735.99 and 206,826.47

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Solution

The fourth proportional to 543,906.02, 815,735.99 and 206,826.47 is: 310,192.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,906.02 : 815,735.99 = 206,826.47 : x
  2. Step 2: Convert to fraction form
    543,906.02/815,735.99 = 206,826.47/x
  3. Step 3: Cross multiply
    543,906.02x = 815,735.99 × 206,826.47
  4. Step 4: Simplify right side
    543,906.02x = 168,715,791,702.04
  5. Step 5: Solve for x
    x = 168,715,791,702.04/543,906.02
  6. Step 6: Final answer
    x = 310,192.91

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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.