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Finding the Fourth Proportional to 298,456, 412,219.20 and 197,679.04

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Solution

The fourth proportional to 298,456, 412,219.20 and 197,679.04 is: 273,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,456 : 412,219.20 = 197,679.04 : x
  2. Step 2: Convert to fraction form
    298,456/412,219.20 = 197,679.04/x
  3. Step 3: Cross multiply
    298,456x = 412,219.20 × 197,679.04
  4. Step 4: Simplify right side
    298,456x = 81,487,095,725.57
  5. Step 5: Solve for x
    x = 81,487,095,725.57/298,456
  6. Step 6: Final answer
    x = 273,028.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.