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Finding the Fourth Proportional to 397,401.36, 548,413.56 and 218,553.36

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Solution

The fourth proportional to 397,401.36, 548,413.56 and 218,553.36 is: 301,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,401.36 : 548,413.56 = 218,553.36 : x
  2. Step 2: Convert to fraction form
    397,401.36/548,413.56 = 218,553.36/x
  3. Step 3: Cross multiply
    397,401.36x = 548,413.56 × 218,553.36
  4. Step 4: Simplify right side
    397,401.36x = 119,857,626,207.56
  5. Step 5: Solve for x
    x = 119,857,626,207.56/397,401.36
  6. Step 6: Final answer
    x = 301,603.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.