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Finding the Fourth Proportional to 489,912.24, 734,679.42 and 190,353.39

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Solution

The fourth proportional to 489,912.24, 734,679.42 and 190,353.39 is: 285,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,912.24 : 734,679.42 = 190,353.39 : x
  2. Step 2: Convert to fraction form
    489,912.24/734,679.42 = 190,353.39/x
  3. Step 3: Cross multiply
    489,912.24x = 734,679.42 × 190,353.39
  4. Step 4: Simplify right side
    489,912.24x = 139,848,718,160.23
  5. Step 5: Solve for x
    x = 139,848,718,160.23/489,912.24
  6. Step 6: Final answer
    x = 285,456.67

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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.