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Finding the Fourth Proportional to 328,484.70, 492,727.05 and 275,340.60

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Solution

The fourth proportional to 328,484.70, 492,727.05 and 275,340.60 is: 413,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,484.70 : 492,727.05 = 275,340.60 : x
  2. Step 2: Convert to fraction form
    328,484.70/492,727.05 = 275,340.60/x
  3. Step 3: Cross multiply
    328,484.70x = 492,727.05 × 275,340.60
  4. Step 4: Simplify right side
    328,484.70x = 135,667,761,583.23
  5. Step 5: Solve for x
    x = 135,667,761,583.23/328,484.70
  6. Step 6: Final answer
    x = 413,010.90

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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.