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Finding the Fourth Proportional to 201,831.20, 302,487.60 and 122,861.60

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Solution

The fourth proportional to 201,831.20, 302,487.60 and 122,861.60 is: 184,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,831.20 : 302,487.60 = 122,861.60 : x
  2. Step 2: Convert to fraction form
    201,831.20/302,487.60 = 122,861.60/x
  3. Step 3: Cross multiply
    201,831.20x = 302,487.60 × 122,861.60
  4. Step 4: Simplify right side
    201,831.20x = 37,164,110,516.16
  5. Step 5: Solve for x
    x = 37,164,110,516.16/201,831.20
  6. Step 6: Final answer
    x = 184,134.62

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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.