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Finding the Fourth Proportional to 395,110.37, 545,252.28 and 213,822.30

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Solution

The fourth proportional to 395,110.37, 545,252.28 and 213,822.30 is: 295,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,110.37 : 545,252.28 = 213,822.30 : x
  2. Step 2: Convert to fraction form
    395,110.37/545,252.28 = 213,822.30/x
  3. Step 3: Cross multiply
    395,110.37x = 545,252.28 × 213,822.30
  4. Step 4: Simplify right side
    395,110.37x = 116,587,094,765.66
  5. Step 5: Solve for x
    x = 116,587,094,765.66/395,110.37
  6. Step 6: Final answer
    x = 295,074.75

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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.