Home / 211,555-305,680

Finding the Third Proportional to 211,555 and 305,680

Calculator

Solution

The third proportional to 211,555 and 305,680 is: 441,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,555 : 305,680 = 305,680 : x
  2. Step 2: Convert to fraction form
    211,555/305,680 = 305,680/x
  3. Step 3: Cross multiply
    211,555x = 305,680 × 305,680
  4. Step 4: Simplify right side
    211,555x = 93,440,262,400
  5. Step 5: Solve for x
    x = 93,440,262,400/211,555
  6. Step 6: Final answer
    x = 441,683.07

Related Problems

Find third proportional to 105,777.50 and 152,840
Half scale
Find third proportional to 423,110 and 611,360
Double scale
Find third proportional to 211,557 and 305,683
Similar ratio
Find third proportional to 317,332.50 and 458,520
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.