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Finding the Fourth Proportional to 289,554.52, 434,183.68 and 121,028.86

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Solution

The fourth proportional to 289,554.52, 434,183.68 and 121,028.86 is: 181,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,554.52 : 434,183.68 = 121,028.86 : x
  2. Step 2: Convert to fraction form
    289,554.52/434,183.68 = 121,028.86/x
  3. Step 3: Cross multiply
    289,554.52x = 434,183.68 × 121,028.86
  4. Step 4: Simplify right side
    289,554.52x = 52,548,755,821.00
  5. Step 5: Solve for x
    x = 52,548,755,821.00/289,554.52
  6. Step 6: Final answer
    x = 181,481.39

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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.