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Finding the Fourth Proportional to 426,183.54, 639,109.11 and 159,798.90

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Solution

The fourth proportional to 426,183.54, 639,109.11 and 159,798.90 is: 239,636.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,183.54 : 639,109.11 = 159,798.90 : x
  2. Step 2: Convert to fraction form
    426,183.54/639,109.11 = 159,798.90/x
  3. Step 3: Cross multiply
    426,183.54x = 639,109.11 × 159,798.90
  4. Step 4: Simplify right side
    426,183.54x = 102,128,932,757.98
  5. Step 5: Solve for x
    x = 102,128,932,757.98/426,183.54
  6. Step 6: Final answer
    x = 239,636.03

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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.