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Finding the Fourth Proportional to 395,251.16, 545,310.30 and 223,147.64

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Solution

The fourth proportional to 395,251.16, 545,310.30 and 223,147.64 is: 307,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,251.16 : 545,310.30 = 223,147.64 : x
  2. Step 2: Convert to fraction form
    395,251.16/545,310.30 = 223,147.64/x
  3. Step 3: Cross multiply
    395,251.16x = 545,310.30 × 223,147.64
  4. Step 4: Simplify right side
    395,251.16x = 121,684,706,512.69
  5. Step 5: Solve for x
    x = 121,684,706,512.69/395,251.16
  6. Step 6: Final answer
    x = 307,866.79

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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.