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Finding the Fourth Proportional to 290,334.72, 400,561.92 and 162,992.64

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Solution

The fourth proportional to 290,334.72, 400,561.92 and 162,992.64 is: 224,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,334.72 : 400,561.92 = 162,992.64 : x
  2. Step 2: Convert to fraction form
    290,334.72/400,561.92 = 162,992.64/x
  3. Step 3: Cross multiply
    290,334.72x = 400,561.92 × 162,992.64
  4. Step 4: Simplify right side
    290,334.72x = 65,288,644,824.27
  5. Step 5: Solve for x
    x = 65,288,644,824.27/290,334.72
  6. Step 6: Final answer
    x = 224,873.71

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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.