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Finding the Fourth Proportional to 320,998.20, 481,554.90 and 134,028.60

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Solution

The fourth proportional to 320,998.20, 481,554.90 and 134,028.60 is: 201,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,998.20 : 481,554.90 = 134,028.60 : x
  2. Step 2: Convert to fraction form
    320,998.20/481,554.90 = 134,028.60/x
  3. Step 3: Cross multiply
    320,998.20x = 481,554.90 × 134,028.60
  4. Step 4: Simplify right side
    320,998.20x = 64,542,129,070.14
  5. Step 5: Solve for x
    x = 64,542,129,070.14/320,998.20
  6. Step 6: Final answer
    x = 201,066.95

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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.