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Finding the Fourth Proportional to 279,093.73, 385,137.73 and 158,243.20

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Solution

The fourth proportional to 279,093.73, 385,137.73 and 158,243.20 is: 218,369.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,093.73 : 385,137.73 = 158,243.20 : x
  2. Step 2: Convert to fraction form
    279,093.73/385,137.73 = 158,243.20/x
  3. Step 3: Cross multiply
    279,093.73x = 385,137.73 × 158,243.20
  4. Step 4: Simplify right side
    279,093.73x = 60,945,426,835.94
  5. Step 5: Solve for x
    x = 60,945,426,835.94/279,093.73
  6. Step 6: Final answer
    x = 218,369.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.