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Finding the Fourth Proportional to 324,402.05, 485,950.61 and 161,805.89

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Solution

The fourth proportional to 324,402.05, 485,950.61 and 161,805.89 is: 242,383.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,402.05 : 485,950.61 = 161,805.89 : x
  2. Step 2: Convert to fraction form
    324,402.05/485,950.61 = 161,805.89/x
  3. Step 3: Cross multiply
    324,402.05x = 485,950.61 × 161,805.89
  4. Step 4: Simplify right side
    324,402.05x = 78,629,668,921.85
  5. Step 5: Solve for x
    x = 78,629,668,921.85/324,402.05
  6. Step 6: Final answer
    x = 242,383.39

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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.