Home / 181,248-421,400

Finding the Third Proportional to 181,248 and 421,400

Calculator

Solution

The third proportional to 181,248 and 421,400 is: 979,751.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,248 : 421,400 = 421,400 : x
  2. Step 2: Convert to fraction form
    181,248/421,400 = 421,400/x
  3. Step 3: Cross multiply
    181,248x = 421,400 × 421,400
  4. Step 4: Simplify right side
    181,248x = 177,577,960,000
  5. Step 5: Solve for x
    x = 177,577,960,000/181,248
  6. Step 6: Final answer
    x = 979,751.28

Related Problems

Find third proportional to 90,624 and 210,700
Half scale
Find third proportional to 362,496 and 842,800
Double scale
Find third proportional to 181,250 and 421,405
Similar ratio
Find third proportional to 271,872 and 632,100
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.