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Finding the Fourth Proportional to 426,182.54, 639,107.61 and 159,797.90

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Solution

The fourth proportional to 426,182.54, 639,107.61 and 159,797.90 is: 239,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,182.54 : 639,107.61 = 159,797.90 : x
  2. Step 2: Convert to fraction form
    426,182.54/639,107.61 = 159,797.90/x
  3. Step 3: Cross multiply
    426,182.54x = 639,107.61 × 159,797.90
  4. Step 4: Simplify right side
    426,182.54x = 102,128,053,952.02
  5. Step 5: Solve for x
    x = 102,128,053,952.02/426,182.54
  6. Step 6: Final answer
    x = 239,634.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.