Home / 392,745.09-589,163.77-140,061.50

Finding the Fourth Proportional to 392,745.09, 589,163.77 and 140,061.50

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Solution

The fourth proportional to 392,745.09, 589,163.77 and 140,061.50 is: 210,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,745.09 : 589,163.77 = 140,061.50 : x
  2. Step 2: Convert to fraction form
    392,745.09/589,163.77 = 140,061.50/x
  3. Step 3: Cross multiply
    392,745.09x = 589,163.77 × 140,061.50
  4. Step 4: Simplify right side
    392,745.09x = 82,519,163,413.76
  5. Step 5: Solve for x
    x = 82,519,163,413.76/392,745.09
  6. Step 6: Final answer
    x = 210,108.71

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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.