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Finding the Fourth Proportional to 381,791.40, 571,520.70 and 297,810.60

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Solution

The fourth proportional to 381,791.40, 571,520.70 and 297,810.60 is: 445,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,791.40 : 571,520.70 = 297,810.60 : x
  2. Step 2: Convert to fraction form
    381,791.40/571,520.70 = 297,810.60/x
  3. Step 3: Cross multiply
    381,791.40x = 571,520.70 × 297,810.60
  4. Step 4: Simplify right side
    381,791.40x = 170,204,922,579.42
  5. Step 5: Solve for x
    x = 170,204,922,579.42/381,791.40
  6. Step 6: Final answer
    x = 445,806.07

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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.