Home / 203,480-315,444

Finding the Third Proportional to 203,480 and 315,444

Calculator

Solution

The third proportional to 203,480 and 315,444 is: 489,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,480 : 315,444 = 315,444 : x
  2. Step 2: Convert to fraction form
    203,480/315,444 = 315,444/x
  3. Step 3: Cross multiply
    203,480x = 315,444 × 315,444
  4. Step 4: Simplify right side
    203,480x = 99,504,917,136
  5. Step 5: Solve for x
    x = 99,504,917,136/203,480
  6. Step 6: Final answer
    x = 489,015.71

Related Problems

Find third proportional to 101,740 and 157,722
Half scale
Find third proportional to 406,960 and 630,888
Double scale
Find third proportional to 203,482 and 315,447
Similar ratio
Find third proportional to 305,220 and 473,166
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.