Home / 165,840-355,320

Finding the Third Proportional to 165,840 and 355,320

Calculator

Solution

The third proportional to 165,840 and 355,320 is: 761,289.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,840 : 355,320 = 355,320 : x
  2. Step 2: Convert to fraction form
    165,840/355,320 = 355,320/x
  3. Step 3: Cross multiply
    165,840x = 355,320 × 355,320
  4. Step 4: Simplify right side
    165,840x = 126,252,302,400
  5. Step 5: Solve for x
    x = 126,252,302,400/165,840
  6. Step 6: Final answer
    x = 761,289.81

Related Problems

Find third proportional to 82,920 and 177,660
Half scale
Find third proportional to 331,680 and 710,640
Double scale
Find third proportional to 165,842 and 355,324
Similar ratio
Find third proportional to 248,760 and 532,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.