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Finding the Fourth Proportional to 513,997.80, 770,553.48 and 247,945.20

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Solution

The fourth proportional to 513,997.80, 770,553.48 and 247,945.20 is: 371,704.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,997.80 : 770,553.48 = 247,945.20 : x
  2. Step 2: Convert to fraction form
    513,997.80/770,553.48 = 247,945.20/x
  3. Step 3: Cross multiply
    513,997.80x = 770,553.48 × 247,945.20
  4. Step 4: Simplify right side
    513,997.80x = 191,055,036,709.30
  5. Step 5: Solve for x
    x = 191,055,036,709.30/513,997.80
  6. Step 6: Final answer
    x = 371,704.00

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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.