Home / 210,413.02-315,693.24-131,434.78

Finding the Fourth Proportional to 210,413.02, 315,693.24 and 131,434.78

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Solution

The fourth proportional to 210,413.02, 315,693.24 and 131,434.78 is: 197,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,413.02 : 315,693.24 = 131,434.78 : x
  2. Step 2: Convert to fraction form
    210,413.02/315,693.24 = 131,434.78/x
  3. Step 3: Cross multiply
    210,413.02x = 315,693.24 × 131,434.78
  4. Step 4: Simplify right side
    210,413.02x = 41,493,071,546.89
  5. Step 5: Solve for x
    x = 41,493,071,546.89/210,413.02
  6. Step 6: Final answer
    x = 197,198.21

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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.