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Finding the Fourth Proportional to 395,039.57, 545,150.66 and 213,747.52

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Solution

The fourth proportional to 395,039.57, 545,150.66 and 213,747.52 is: 294,969.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,039.57 : 545,150.66 = 213,747.52 : x
  2. Step 2: Convert to fraction form
    395,039.57/545,150.66 = 213,747.52/x
  3. Step 3: Cross multiply
    395,039.57x = 545,150.66 × 213,747.52
  4. Step 4: Simplify right side
    395,039.57x = 116,524,600,462.17
  5. Step 5: Solve for x
    x = 116,524,600,462.17/395,039.57
  6. Step 6: Final answer
    x = 294,969.44

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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.