How many votes are needed to reach the Droop quota when 250,000 votes are cast for four seats?

To calculate the Droop quota for an election, you use the following formula:

$$\text{Quota}=\left(\frac{\text{Total Votes}}{\text{Total Seats}+1}\right)+1$$

Given 250,000 votes and four seats, the calculation is as follows:

$$\left(\frac{250,000}{4+1}\right)+1=\left(\frac{250,000}{5}\right)+1=50,000+1=50,001$$

Therefore, a candidate needs 50,001 votes to reach the Droop quota and secure a seat under the single transferable vote system.1