Home / 121,240-248,488

Finding the Third Proportional to 121,240 and 248,488

Calculator

Solution

The third proportional to 121,240 and 248,488 is: 509,289.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,240 : 248,488 = 248,488 : x
  2. Step 2: Convert to fraction form
    121,240/248,488 = 248,488/x
  3. Step 3: Cross multiply
    121,240x = 248,488 × 248,488
  4. Step 4: Simplify right side
    121,240x = 61,746,286,144
  5. Step 5: Solve for x
    x = 61,746,286,144/121,240
  6. Step 6: Final answer
    x = 509,289.72

Related Problems

Find third proportional to 60,620 and 124,244
Half scale
Find third proportional to 242,480 and 496,976
Double scale
Find third proportional to 121,242 and 248,492
Similar ratio
Find third proportional to 181,860 and 372,732
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.