Home / 200,276-309,999

Finding the Third Proportional to 200,276 and 309,999

Calculator

Solution

The third proportional to 200,276 and 309,999 is: 479,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,276 : 309,999 = 309,999 : x
  2. Step 2: Convert to fraction form
    200,276/309,999 = 309,999/x
  3. Step 3: Cross multiply
    200,276x = 309,999 × 309,999
  4. Step 4: Simplify right side
    200,276x = 96,099,380,001
  5. Step 5: Solve for x
    x = 96,099,380,001/200,276
  6. Step 6: Final answer
    x = 479,834.73

Related Problems

Find third proportional to 100,138 and 154,999.50
Half scale
Find third proportional to 400,552 and 619,998
Double scale
Find third proportional to 200,278 and 310,002
Similar ratio
Find third proportional to 300,414 and 464,998.50
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.