Home / 128,084-278,316

Finding the Third Proportional to 128,084 and 278,316

Calculator

Solution

The third proportional to 128,084 and 278,316 is: 604,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,084 : 278,316 = 278,316 : x
  2. Step 2: Convert to fraction form
    128,084/278,316 = 278,316/x
  3. Step 3: Cross multiply
    128,084x = 278,316 × 278,316
  4. Step 4: Simplify right side
    128,084x = 77,459,795,856
  5. Step 5: Solve for x
    x = 77,459,795,856/128,084
  6. Step 6: Final answer
    x = 604,757.78

Related Problems

Find third proportional to 64,042 and 139,158
Half scale
Find third proportional to 256,168 and 556,632
Double scale
Find third proportional to 128,086 and 278,320
Similar ratio
Find third proportional to 192,126 and 417,474
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.