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Finding the Fourth Proportional to 323,016.54, 484,487.90 and 86,377.67

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Solution

The fourth proportional to 323,016.54, 484,487.90 and 86,377.67 is: 129,556.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,016.54 : 484,487.90 = 86,377.67 : x
  2. Step 2: Convert to fraction form
    323,016.54/484,487.90 = 86,377.67/x
  3. Step 3: Cross multiply
    323,016.54x = 484,487.90 × 86,377.67
  4. Step 4: Simplify right side
    323,016.54x = 41,848,935,945.19
  5. Step 5: Solve for x
    x = 41,848,935,945.19/323,016.54
  6. Step 6: Final answer
    x = 129,556.63

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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.