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Finding the Fourth Proportional to 326,576.56, 490,015.50 and 149,137.96

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Solution

The fourth proportional to 326,576.56, 490,015.50 and 149,137.96 is: 223,775.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,576.56 : 490,015.50 = 149,137.96 : x
  2. Step 2: Convert to fraction form
    326,576.56/490,015.50 = 149,137.96/x
  3. Step 3: Cross multiply
    326,576.56x = 490,015.50 × 149,137.96
  4. Step 4: Simplify right side
    326,576.56x = 73,079,912,038.38
  5. Step 5: Solve for x
    x = 73,079,912,038.38/326,576.56
  6. Step 6: Final answer
    x = 223,775.74

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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.