Home / 128,772-278,982

Finding the Third Proportional to 128,772 and 278,982

Calculator

Solution

The third proportional to 128,772 and 278,982 is: 604,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,772 : 278,982 = 278,982 : x
  2. Step 2: Convert to fraction form
    128,772/278,982 = 278,982/x
  3. Step 3: Cross multiply
    128,772x = 278,982 × 278,982
  4. Step 4: Simplify right side
    128,772x = 77,830,956,324
  5. Step 5: Solve for x
    x = 77,830,956,324/128,772
  6. Step 6: Final answer
    x = 604,409.00

Related Problems

Find third proportional to 64,386 and 139,491
Half scale
Find third proportional to 257,544 and 557,964
Double scale
Find third proportional to 128,774 and 278,986
Similar ratio
Find third proportional to 193,158 and 418,473
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.