Home / 345,413.41-518,189.96-145,734.28

Finding the Fourth Proportional to 345,413.41, 518,189.96 and 145,734.28

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Solution

The fourth proportional to 345,413.41, 518,189.96 and 145,734.28 is: 218,630.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,413.41 : 518,189.96 = 145,734.28 : x
  2. Step 2: Convert to fraction form
    345,413.41/518,189.96 = 145,734.28/x
  3. Step 3: Cross multiply
    345,413.41x = 518,189.96 × 145,734.28
  4. Step 4: Simplify right side
    345,413.41x = 75,518,040,723.83
  5. Step 5: Solve for x
    x = 75,518,040,723.83/345,413.41
  6. Step 6: Final answer
    x = 218,630.89

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1.5x scale

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.