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Finding the Fourth Proportional to 270,449.91, 405,670.28 and 80,910.72

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Solution

The fourth proportional to 270,449.91, 405,670.28 and 80,910.72 is: 121,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,449.91 : 405,670.28 = 80,910.72 : x
  2. Step 2: Convert to fraction form
    270,449.91/405,670.28 = 80,910.72/x
  3. Step 3: Cross multiply
    270,449.91x = 405,670.28 × 80,910.72
  4. Step 4: Simplify right side
    270,449.91x = 32,823,074,032.85
  5. Step 5: Solve for x
    x = 32,823,074,032.85/270,449.91
  6. Step 6: Final answer
    x = 121,364.71

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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.