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Finding the Fourth Proportional to 279,093.81, 385,137.83 and 158,243.26

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Solution

The fourth proportional to 279,093.81, 385,137.83 and 158,243.26 is: 218,369.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,093.81 : 385,137.83 = 158,243.26 : x
  2. Step 2: Convert to fraction form
    279,093.81/385,137.83 = 158,243.26/x
  3. Step 3: Cross multiply
    279,093.81x = 385,137.83 × 158,243.26
  4. Step 4: Simplify right side
    279,093.81x = 60,945,465,768.53
  5. Step 5: Solve for x
    x = 60,945,465,768.53/279,093.81
  6. Step 6: Final answer
    x = 218,369.11

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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.