Home / 128,204-278,040

Finding the Third Proportional to 128,204 and 278,040

Calculator

Solution

The third proportional to 128,204 and 278,040 is: 602,993.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,204 : 278,040 = 278,040 : x
  2. Step 2: Convert to fraction form
    128,204/278,040 = 278,040/x
  3. Step 3: Cross multiply
    128,204x = 278,040 × 278,040
  4. Step 4: Simplify right side
    128,204x = 77,306,241,600
  5. Step 5: Solve for x
    x = 77,306,241,600/128,204
  6. Step 6: Final answer
    x = 602,993.99

Related Problems

Find third proportional to 64,102 and 139,020
Half scale
Find third proportional to 256,408 and 556,080
Double scale
Find third proportional to 128,206 and 278,044
Similar ratio
Find third proportional to 192,306 and 417,060
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.