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Finding the Fourth Proportional to 543,375.80, 814,407.60 and 276,999.20

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Solution

The fourth proportional to 543,375.80, 814,407.60 and 276,999.20 is: 415,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,375.80 : 814,407.60 = 276,999.20 : x
  2. Step 2: Convert to fraction form
    543,375.80/814,407.60 = 276,999.20/x
  3. Step 3: Cross multiply
    543,375.80x = 814,407.60 × 276,999.20
  4. Step 4: Simplify right side
    543,375.80x = 225,590,253,673.92
  5. Step 5: Solve for x
    x = 225,590,253,673.92/543,375.80
  6. Step 6: Final answer
    x = 415,164.34

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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.