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Finding the Fourth Proportional to 379,991.72, 569,611.70 and 179,960.60

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Solution

The fourth proportional to 379,991.72, 569,611.70 and 179,960.60 is: 269,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,991.72 : 569,611.70 = 179,960.60 : x
  2. Step 2: Convert to fraction form
    379,991.72/569,611.70 = 179,960.60/x
  3. Step 3: Cross multiply
    379,991.72x = 569,611.70 × 179,960.60
  4. Step 4: Simplify right side
    379,991.72x = 102,507,663,299.02
  5. Step 5: Solve for x
    x = 102,507,663,299.02/379,991.72
  6. Step 6: Final answer
    x = 269,762.89

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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.