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Finding the Fourth Proportional to 306,509.87, 422,920.24 and 179,160.86

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Solution

The fourth proportional to 306,509.87, 422,920.24 and 179,160.86 is: 247,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,509.87 : 422,920.24 = 179,160.86 : x
  2. Step 2: Convert to fraction form
    306,509.87/422,920.24 = 179,160.86/x
  3. Step 3: Cross multiply
    306,509.87x = 422,920.24 × 179,160.86
  4. Step 4: Simplify right side
    306,509.87x = 75,770,754,519.20
  5. Step 5: Solve for x
    x = 75,770,754,519.20/306,509.87
  6. Step 6: Final answer
    x = 247,204.94

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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.