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Finding the Fourth Proportional to 201,499.20, 301,989.60 and 122,529.60

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Solution

The fourth proportional to 201,499.20, 301,989.60 and 122,529.60 is: 183,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,499.20 : 301,989.60 = 122,529.60 : x
  2. Step 2: Convert to fraction form
    201,499.20/301,989.60 = 122,529.60/x
  3. Step 3: Cross multiply
    201,499.20x = 301,989.60 × 122,529.60
  4. Step 4: Simplify right side
    201,499.20x = 37,002,664,892.16
  5. Step 5: Solve for x
    x = 37,002,664,892.16/201,499.20
  6. Step 6: Final answer
    x = 183,636.78

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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.