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Finding the Fourth Proportional to 298,621.78, 412,098 and 164,485.78

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Solution

The fourth proportional to 298,621.78, 412,098 and 164,485.78 is: 226,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,621.78 : 412,098 = 164,485.78 : x
  2. Step 2: Convert to fraction form
    298,621.78/412,098 = 164,485.78/x
  3. Step 3: Cross multiply
    298,621.78x = 412,098 × 164,485.78
  4. Step 4: Simplify right side
    298,621.78x = 67,784,260,966.44
  5. Step 5: Solve for x
    x = 67,784,260,966.44/298,621.78
  6. Step 6: Final answer
    x = 226,990.35

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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.