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Finding the Fourth Proportional to 279,115.52, 385,167.70 and 158,265

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Solution

The fourth proportional to 279,115.52, 385,167.70 and 158,265 is: 218,399.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,115.52 : 385,167.70 = 158,265 : x
  2. Step 2: Convert to fraction form
    279,115.52/385,167.70 = 158,265/x
  3. Step 3: Cross multiply
    279,115.52x = 385,167.70 × 158,265
  4. Step 4: Simplify right side
    279,115.52x = 60,958,566,040.50
  5. Step 5: Solve for x
    x = 60,958,566,040.50/279,115.52
  6. Step 6: Final answer
    x = 218,399.06

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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.