Home / 278,974-358,197

Finding the Third Proportional to 278,974 and 358,197

Calculator

Solution

The third proportional to 278,974 and 358,197 is: 459,917.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,974 : 358,197 = 358,197 : x
  2. Step 2: Convert to fraction form
    278,974/358,197 = 358,197/x
  3. Step 3: Cross multiply
    278,974x = 358,197 × 358,197
  4. Step 4: Simplify right side
    278,974x = 128,305,090,809
  5. Step 5: Solve for x
    x = 128,305,090,809/278,974
  6. Step 6: Final answer
    x = 459,917.74

Related Problems

Find third proportional to 139,487 and 179,098.50
Half scale
Find third proportional to 557,948 and 716,394
Double scale
Find third proportional to 278,976 and 358,200
Similar ratio
Find third proportional to 418,461 and 537,295.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.