Home / 208,824.78-313,224.21-90,413.58

Finding the Fourth Proportional to 208,824.78, 313,224.21 and 90,413.58

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Solution

The fourth proportional to 208,824.78, 313,224.21 and 90,413.58 is: 135,614.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,824.78 : 313,224.21 = 90,413.58 : x
  2. Step 2: Convert to fraction form
    208,824.78/313,224.21 = 90,413.58/x
  3. Step 3: Cross multiply
    208,824.78x = 313,224.21 × 90,413.58
  4. Step 4: Simplify right side
    208,824.78x = 28,319,722,168.77
  5. Step 5: Solve for x
    x = 28,319,722,168.77/208,824.78
  6. Step 6: Final answer
    x = 135,614.76

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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.