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Finding the Fourth Proportional to 192,815.60, 289,914.60 and 162,402.80

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Solution

The fourth proportional to 192,815.60, 289,914.60 and 162,402.80 is: 244,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,815.60 : 289,914.60 = 162,402.80 : x
  2. Step 2: Convert to fraction form
    192,815.60/289,914.60 = 162,402.80/x
  3. Step 3: Cross multiply
    192,815.60x = 289,914.60 × 162,402.80
  4. Step 4: Simplify right side
    192,815.60x = 47,082,942,800.88
  5. Step 5: Solve for x
    x = 47,082,942,800.88/192,815.60
  6. Step 6: Final answer
    x = 244,186.38

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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.