Home / 379,183.21-523,269.62-209,413.69

Finding the Fourth Proportional to 379,183.21, 523,269.62 and 209,413.69

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Solution

The fourth proportional to 379,183.21, 523,269.62 and 209,413.69 is: 288,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,183.21 : 523,269.62 = 209,413.69 : x
  2. Step 2: Convert to fraction form
    379,183.21/523,269.62 = 209,413.69/x
  3. Step 3: Cross multiply
    379,183.21x = 523,269.62 × 209,413.69
  4. Step 4: Simplify right side
    379,183.21x = 109,579,820,419.16
  5. Step 5: Solve for x
    x = 109,579,820,419.16/379,183.21
  6. Step 6: Final answer
    x = 288,989.12

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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.