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Finding the Fourth Proportional to 279,093.31, 385,137.14 and 158,242.77

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Solution

The fourth proportional to 279,093.31, 385,137.14 and 158,242.77 is: 218,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,093.31 : 385,137.14 = 158,242.77 : x
  2. Step 2: Convert to fraction form
    279,093.31/385,137.14 = 158,242.77/x
  3. Step 3: Cross multiply
    279,093.31x = 385,137.14 × 158,242.77
  4. Step 4: Simplify right side
    279,093.31x = 60,945,165,542.19
  5. Step 5: Solve for x
    x = 60,945,165,542.19/279,093.31
  6. Step 6: Final answer
    x = 218,368.42

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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.