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Finding the Fourth Proportional to 288,892.70, 398,668.38 and 159,840.56

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Solution

The fourth proportional to 288,892.70, 398,668.38 and 159,840.56 is: 220,578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,892.70 : 398,668.38 = 159,840.56 : x
  2. Step 2: Convert to fraction form
    288,892.70/398,668.38 = 159,840.56/x
  3. Step 3: Cross multiply
    288,892.70x = 398,668.38 × 159,840.56
  4. Step 4: Simplify right side
    288,892.70x = 63,723,375,120.15
  5. Step 5: Solve for x
    x = 63,723,375,120.15/288,892.70
  6. Step 6: Final answer
    x = 220,578.01

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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.