Home / 200,978-310,913

Finding the Third Proportional to 200,978 and 310,913

Calculator

Solution

The third proportional to 200,978 and 310,913 is: 480,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,978 : 310,913 = 310,913 : x
  2. Step 2: Convert to fraction form
    200,978/310,913 = 310,913/x
  3. Step 3: Cross multiply
    200,978x = 310,913 × 310,913
  4. Step 4: Simplify right side
    200,978x = 96,666,893,569
  5. Step 5: Solve for x
    x = 96,666,893,569/200,978
  6. Step 6: Final answer
    x = 480,982.46

Related Problems

Find third proportional to 100,489 and 155,456.50
Half scale
Find third proportional to 401,956 and 621,826
Double scale
Find third proportional to 200,980 and 310,916
Similar ratio
Find third proportional to 301,467 and 466,369.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.