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Finding the Fourth Proportional to 306,228.87, 422,614.98 and 170,293.23

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Solution

The fourth proportional to 306,228.87, 422,614.98 and 170,293.23 is: 235,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,228.87 : 422,614.98 = 170,293.23 : x
  2. Step 2: Convert to fraction form
    306,228.87/422,614.98 = 170,293.23/x
  3. Step 3: Cross multiply
    306,228.87x = 422,614.98 × 170,293.23
  4. Step 4: Simplify right side
    306,228.87x = 71,968,469,990.59
  5. Step 5: Solve for x
    x = 71,968,469,990.59/306,228.87
  6. Step 6: Final answer
    x = 235,015.30

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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.