Home / 128,022-279,340

Finding the Third Proportional to 128,022 and 279,340

Calculator

Solution

The third proportional to 128,022 and 279,340 is: 609,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022 : 279,340 = 279,340 : x
  2. Step 2: Convert to fraction form
    128,022/279,340 = 279,340/x
  3. Step 3: Cross multiply
    128,022x = 279,340 × 279,340
  4. Step 4: Simplify right side
    128,022x = 78,030,835,600
  5. Step 5: Solve for x
    x = 78,030,835,600/128,022
  6. Step 6: Final answer
    x = 609,511.14

Related Problems

Find third proportional to 64,011 and 139,670
Half scale
Find third proportional to 256,044 and 558,680
Double scale
Find third proportional to 128,024 and 279,344
Similar ratio
Find third proportional to 192,033 and 419,010
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.