Home / 145,370-218,919

Finding the Third Proportional to 145,370 and 218,919

Calculator

Solution

The third proportional to 145,370 and 218,919 is: 329,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,370 : 218,919 = 218,919 : x
  2. Step 2: Convert to fraction form
    145,370/218,919 = 218,919/x
  3. Step 3: Cross multiply
    145,370x = 218,919 × 218,919
  4. Step 4: Simplify right side
    145,370x = 47,925,528,561
  5. Step 5: Solve for x
    x = 47,925,528,561/145,370
  6. Step 6: Final answer
    x = 329,679.64

Related Problems

Find third proportional to 72,685 and 109,459.50
Half scale
Find third proportional to 290,740 and 437,838
Double scale
Find third proportional to 145,372 and 218,922
Similar ratio
Find third proportional to 218,055 and 328,378.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.