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Finding the Fourth Proportional to 298,052.80, 445,912.80 and 193,076.80

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Solution

The fourth proportional to 298,052.80, 445,912.80 and 193,076.80 is: 288,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,052.80 : 445,912.80 = 193,076.80 : x
  2. Step 2: Convert to fraction form
    298,052.80/445,912.80 = 193,076.80/x
  3. Step 3: Cross multiply
    298,052.80x = 445,912.80 × 193,076.80
  4. Step 4: Simplify right side
    298,052.80x = 86,095,416,503.04
  5. Step 5: Solve for x
    x = 86,095,416,503.04/298,052.80
  6. Step 6: Final answer
    x = 288,859.61

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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.