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Finding the Fourth Proportional to 270,081.72, 372,720.29 and 149,230.80

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Solution

The fourth proportional to 270,081.72, 372,720.29 and 149,230.80 is: 205,942.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,081.72 : 372,720.29 = 149,230.80 : x
  2. Step 2: Convert to fraction form
    270,081.72/372,720.29 = 149,230.80/x
  3. Step 3: Cross multiply
    270,081.72x = 372,720.29 × 149,230.80
  4. Step 4: Simplify right side
    270,081.72x = 55,621,347,052.93
  5. Step 5: Solve for x
    x = 55,621,347,052.93/270,081.72
  6. Step 6: Final answer
    x = 205,942.66

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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.