Home / 128,812-282,228

Finding the Third Proportional to 128,812 and 282,228

Calculator

Solution

The third proportional to 128,812 and 282,228 is: 618,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,812 : 282,228 = 282,228 : x
  2. Step 2: Convert to fraction form
    128,812/282,228 = 282,228/x
  3. Step 3: Cross multiply
    128,812x = 282,228 × 282,228
  4. Step 4: Simplify right side
    128,812x = 79,652,643,984
  5. Step 5: Solve for x
    x = 79,652,643,984/128,812
  6. Step 6: Final answer
    x = 618,363.54

Related Problems

Find third proportional to 64,406 and 141,114
Half scale
Find third proportional to 257,624 and 564,456
Double scale
Find third proportional to 128,814 and 282,232
Similar ratio
Find third proportional to 193,218 and 423,342
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.