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Finding the Fourth Proportional to 270,416.90, 405,635.48 and 80,879.73

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Solution

The fourth proportional to 270,416.90, 405,635.48 and 80,879.73 is: 121,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,416.90 : 405,635.48 = 80,879.73 : x
  2. Step 2: Convert to fraction form
    270,416.90/405,635.48 = 80,879.73/x
  3. Step 3: Cross multiply
    270,416.90x = 405,635.48 × 80,879.73
  4. Step 4: Simplify right side
    270,416.90x = 32,807,687,696.42
  5. Step 5: Solve for x
    x = 32,807,687,696.42/270,416.90
  6. Step 6: Final answer
    x = 121,322.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.