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Finding the Fourth Proportional to 279,094.31, 385,138.52 and 158,243.77

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Solution

The fourth proportional to 279,094.31, 385,138.52 and 158,243.77 is: 218,369.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,094.31 : 385,138.52 = 158,243.77 : x
  2. Step 2: Convert to fraction form
    279,094.31/385,138.52 = 158,243.77/x
  3. Step 3: Cross multiply
    279,094.31x = 385,138.52 × 158,243.77
  4. Step 4: Simplify right side
    279,094.31x = 60,945,771,377.02
  5. Step 5: Solve for x
    x = 60,945,771,377.02/279,094.31
  6. Step 6: Final answer
    x = 218,369.81

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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.