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Finding the Fourth Proportional to 513,600.55, 770,564.85 and 247,387.97

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Solution

The fourth proportional to 513,600.55, 770,564.85 and 247,387.97 is: 371,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,600.55 : 770,564.85 = 247,387.97 : x
  2. Step 2: Convert to fraction form
    513,600.55/770,564.85 = 247,387.97/x
  3. Step 3: Cross multiply
    513,600.55x = 770,564.85 × 247,387.97
  4. Step 4: Simplify right side
    513,600.55x = 190,628,474,993.56
  5. Step 5: Solve for x
    x = 190,628,474,993.56/513,600.55
  6. Step 6: Final answer
    x = 371,160.97

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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.