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Finding the Fourth Proportional to 199,424.40, 298,942.20 and 178,429.20

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Solution

The fourth proportional to 199,424.40, 298,942.20 and 178,429.20 is: 267,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,424.40 : 298,942.20 = 178,429.20 : x
  2. Step 2: Convert to fraction form
    199,424.40/298,942.20 = 178,429.20/x
  3. Step 3: Cross multiply
    199,424.40x = 298,942.20 × 178,429.20
  4. Step 4: Simplify right side
    199,424.40x = 53,340,017,592.24
  5. Step 5: Solve for x
    x = 53,340,017,592.24/199,424.40
  6. Step 6: Final answer
    x = 267,469.87

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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.