Home / 140,979-218,631

Finding the Third Proportional to 140,979 and 218,631

Calculator

Solution

The third proportional to 140,979 and 218,631 is: 339,054.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,979 : 218,631 = 218,631 : x
  2. Step 2: Convert to fraction form
    140,979/218,631 = 218,631/x
  3. Step 3: Cross multiply
    140,979x = 218,631 × 218,631
  4. Step 4: Simplify right side
    140,979x = 47,799,514,161
  5. Step 5: Solve for x
    x = 47,799,514,161/140,979
  6. Step 6: Final answer
    x = 339,054.14

Related Problems

Find third proportional to 70,489.50 and 109,315.50
Half scale
Find third proportional to 281,958 and 437,262
Double scale
Find third proportional to 140,981 and 218,634
Similar ratio
Find third proportional to 211,468.50 and 327,946.50
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.