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Finding the Fourth Proportional to 307,076.60, 423,754.92 and 171,103.52

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Solution

The fourth proportional to 307,076.60, 423,754.92 and 171,103.52 is: 236,116.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,076.60 : 423,754.92 = 171,103.52 : x
  2. Step 2: Convert to fraction form
    307,076.60/423,754.92 = 171,103.52/x
  3. Step 3: Cross multiply
    307,076.60x = 423,754.92 × 171,103.52
  4. Step 4: Simplify right side
    307,076.60x = 72,505,956,310.54
  5. Step 5: Solve for x
    x = 72,505,956,310.54/307,076.60
  6. Step 6: Final answer
    x = 236,116.84

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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.