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Finding the Fourth Proportional to 192,816.60, 289,916.10 and 162,403.80

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Solution

The fourth proportional to 192,816.60, 289,916.10 and 162,403.80 is: 244,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,816.60 : 289,916.10 = 162,403.80 : x
  2. Step 2: Convert to fraction form
    192,816.60/289,916.10 = 162,403.80/x
  3. Step 3: Cross multiply
    192,816.60x = 289,916.10 × 162,403.80
  4. Step 4: Simplify right side
    192,816.60x = 47,083,476,321.18
  5. Step 5: Solve for x
    x = 47,083,476,321.18/192,816.60
  6. Step 6: Final answer
    x = 244,187.88

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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.