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Finding the Fourth Proportional to 279,115.92, 385,171.74 and 158,268.24

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Solution

The fourth proportional to 279,115.92, 385,171.74 and 158,268.24 is: 218,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,115.92 : 385,171.74 = 158,268.24 : x
  2. Step 2: Convert to fraction form
    279,115.92/385,171.74 = 158,268.24/x
  3. Step 3: Cross multiply
    279,115.92x = 385,171.74 × 158,268.24
  4. Step 4: Simplify right side
    279,115.92x = 60,960,453,387.54
  5. Step 5: Solve for x
    x = 60,960,453,387.54/279,115.92
  6. Step 6: Final answer
    x = 218,405.50

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1.5x scale

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.