Home / 135,264-289,290

Finding the Third Proportional to 135,264 and 289,290

Calculator

Solution

The third proportional to 135,264 and 289,290 is: 618,706.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,264 : 289,290 = 289,290 : x
  2. Step 2: Convert to fraction form
    135,264/289,290 = 289,290/x
  3. Step 3: Cross multiply
    135,264x = 289,290 × 289,290
  4. Step 4: Simplify right side
    135,264x = 83,688,704,100
  5. Step 5: Solve for x
    x = 83,688,704,100/135,264
  6. Step 6: Final answer
    x = 618,706.41

Related Problems

Find third proportional to 67,632 and 144,645
Half scale
Find third proportional to 270,528 and 578,580
Double scale
Find third proportional to 135,266 and 289,294
Similar ratio
Find third proportional to 202,896 and 433,935
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.