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Finding the Fourth Proportional to 328,975.45, 492,340.40 and 275,727.54

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Solution

The fourth proportional to 328,975.45, 492,340.40 and 275,727.54 is: 412,650.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,975.45 : 492,340.40 = 275,727.54 : x
  2. Step 2: Convert to fraction form
    328,975.45/492,340.40 = 275,727.54/x
  3. Step 3: Cross multiply
    328,975.45x = 492,340.40 × 275,727.54
  4. Step 4: Simplify right side
    328,975.45x = 135,751,809,611.72
  5. Step 5: Solve for x
    x = 135,751,809,611.72/328,975.45
  6. Step 6: Final answer
    x = 412,650.27

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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.