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Finding the Fourth Proportional to 217,086.60, 299,570.76 and 126,445.44

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Solution

The fourth proportional to 217,086.60, 299,570.76 and 126,445.44 is: 174,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,086.60 : 299,570.76 = 126,445.44 : x
  2. Step 2: Convert to fraction form
    217,086.60/299,570.76 = 126,445.44/x
  3. Step 3: Cross multiply
    217,086.60x = 299,570.76 × 126,445.44
  4. Step 4: Simplify right side
    217,086.60x = 37,879,356,559.33
  5. Step 5: Solve for x
    x = 37,879,356,559.33/217,086.60
  6. Step 6: Final answer
    x = 174,489.61

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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.