Home / 136,290-296,580

Finding the Third Proportional to 136,290 and 296,580

Calculator

Solution

The third proportional to 136,290 and 296,580 is: 645,386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,290 : 296,580 = 296,580 : x
  2. Step 2: Convert to fraction form
    136,290/296,580 = 296,580/x
  3. Step 3: Cross multiply
    136,290x = 296,580 × 296,580
  4. Step 4: Simplify right side
    136,290x = 87,959,696,400
  5. Step 5: Solve for x
    x = 87,959,696,400/136,290
  6. Step 6: Final answer
    x = 645,386.28

Related Problems

Find third proportional to 68,145 and 148,290
Half scale
Find third proportional to 272,580 and 593,160
Double scale
Find third proportional to 136,292 and 296,584
Similar ratio
Find third proportional to 204,435 and 444,870
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.