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Finding the Fourth Proportional to 613,413.80, 920,120.70 and 192,732.20

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Solution

The fourth proportional to 613,413.80, 920,120.70 and 192,732.20 is: 289,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,413.80 : 920,120.70 = 192,732.20 : x
  2. Step 2: Convert to fraction form
    613,413.80/920,120.70 = 192,732.20/x
  3. Step 3: Cross multiply
    613,413.80x = 920,120.70 × 192,732.20
  4. Step 4: Simplify right side
    613,413.80x = 177,336,886,776.54
  5. Step 5: Solve for x
    x = 177,336,886,776.54/613,413.80
  6. Step 6: Final answer
    x = 289,098.30

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Similar ratio
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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.