Home / 211,421-440,284

Finding the Third Proportional to 211,421 and 440,284

Calculator

Solution

The third proportional to 211,421 and 440,284 is: 916,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,421 : 440,284 = 440,284 : x
  2. Step 2: Convert to fraction form
    211,421/440,284 = 440,284/x
  3. Step 3: Cross multiply
    211,421x = 440,284 × 440,284
  4. Step 4: Simplify right side
    211,421x = 193,850,000,656
  5. Step 5: Solve for x
    x = 193,850,000,656/211,421
  6. Step 6: Final answer
    x = 916,890.95

Related Problems

Find third proportional to 105,710.50 and 220,142
Half scale
Find third proportional to 422,842 and 880,568
Double scale
Find third proportional to 211,423 and 440,288
Similar ratio
Find third proportional to 317,131.50 and 660,426
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.