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Finding the Fourth Proportional to 306,180.72, 422,735.58 and 273,814.92

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Solution

The fourth proportional to 306,180.72, 422,735.58 and 273,814.92 is: 378,048.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,180.72 : 422,735.58 = 273,814.92 : x
  2. Step 2: Convert to fraction form
    306,180.72/422,735.58 = 273,814.92/x
  3. Step 3: Cross multiply
    306,180.72x = 422,735.58 × 273,814.92
  4. Step 4: Simplify right side
    306,180.72x = 115,751,309,018.85
  5. Step 5: Solve for x
    x = 115,751,309,018.85/306,180.72
  6. Step 6: Final answer
    x = 378,048.98

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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.