Home / 128,889-282,564

Finding the Third Proportional to 128,889 and 282,564

Calculator

Solution

The third proportional to 128,889 and 282,564 is: 619,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889 : 282,564 = 282,564 : x
  2. Step 2: Convert to fraction form
    128,889/282,564 = 282,564/x
  3. Step 3: Cross multiply
    128,889x = 282,564 × 282,564
  4. Step 4: Simplify right side
    128,889x = 79,842,414,096
  5. Step 5: Solve for x
    x = 79,842,414,096/128,889
  6. Step 6: Final answer
    x = 619,466.47

Related Problems

Find third proportional to 64,444.50 and 141,282
Half scale
Find third proportional to 257,778 and 565,128
Double scale
Find third proportional to 128,891 and 282,568
Similar ratio
Find third proportional to 193,333.50 and 423,846
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.