Home / 243,274-387,396

Finding the Third Proportional to 243,274 and 387,396

Calculator

Solution

The third proportional to 243,274 and 387,396 is: 616,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,274 : 387,396 = 387,396 : x
  2. Step 2: Convert to fraction form
    243,274/387,396 = 387,396/x
  3. Step 3: Cross multiply
    243,274x = 387,396 × 387,396
  4. Step 4: Simplify right side
    243,274x = 150,075,660,816
  5. Step 5: Solve for x
    x = 150,075,660,816/243,274
  6. Step 6: Final answer
    x = 616,899.71

Related Problems

Find third proportional to 121,637 and 193,698
Half scale
Find third proportional to 486,548 and 774,792
Double scale
Find third proportional to 243,276 and 387,399
Similar ratio
Find third proportional to 364,911 and 581,094
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.