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Finding the Fourth Proportional to 270,581.23, 405,757.67 and 81,068.55

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Solution

The fourth proportional to 270,581.23, 405,757.67 and 81,068.55 is: 121,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,581.23 : 405,757.67 = 81,068.55 : x
  2. Step 2: Convert to fraction form
    270,581.23/405,757.67 = 81,068.55/x
  3. Step 3: Cross multiply
    270,581.23x = 405,757.67 × 81,068.55
  4. Step 4: Simplify right side
    270,581.23x = 32,894,184,145.35
  5. Step 5: Solve for x
    x = 32,894,184,145.35/270,581.23
  6. Step 6: Final answer
    x = 121,568.61

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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.