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Finding the Fourth Proportional to 481,428.70, 721,559.85 and 214,906.30

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Solution

The fourth proportional to 481,428.70, 721,559.85 and 214,906.30 is: 322,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,428.70 : 721,559.85 = 214,906.30 : x
  2. Step 2: Convert to fraction form
    481,428.70/721,559.85 = 214,906.30/x
  3. Step 3: Cross multiply
    481,428.70x = 721,559.85 × 214,906.30
  4. Step 4: Simplify right side
    481,428.70x = 155,067,757,592.06
  5. Step 5: Solve for x
    x = 155,067,757,592.06/481,428.70
  6. Step 6: Final answer
    x = 322,099.11

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1.5x scale

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.