Home / 202,878-315,392

Finding the Third Proportional to 202,878 and 315,392

Calculator

Solution

The third proportional to 202,878 and 315,392 is: 490,305.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,878 : 315,392 = 315,392 : x
  2. Step 2: Convert to fraction form
    202,878/315,392 = 315,392/x
  3. Step 3: Cross multiply
    202,878x = 315,392 × 315,392
  4. Step 4: Simplify right side
    202,878x = 99,472,113,664
  5. Step 5: Solve for x
    x = 99,472,113,664/202,878
  6. Step 6: Final answer
    x = 490,305.08

Related Problems

Find third proportional to 101,439 and 157,696
Half scale
Find third proportional to 405,756 and 630,784
Double scale
Find third proportional to 202,880 and 315,395
Similar ratio
Find third proportional to 304,317 and 473,088
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.