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Finding the Fourth Proportional to 395,004.53, 545,105.90 and 222,958.71

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Solution

The fourth proportional to 395,004.53, 545,105.90 and 222,958.71 is: 307,682.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,004.53 : 545,105.90 = 222,958.71 : x
  2. Step 2: Convert to fraction form
    395,004.53/545,105.90 = 222,958.71/x
  3. Step 3: Cross multiply
    395,004.53x = 545,105.90 × 222,958.71
  4. Step 4: Simplify right side
    395,004.53x = 121,536,108,834.79
  5. Step 5: Solve for x
    x = 121,536,108,834.79/395,004.53
  6. Step 6: Final answer
    x = 307,682.82

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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.