Home / 137,368-289,740

Finding the Third Proportional to 137,368 and 289,740

Calculator

Solution

The third proportional to 137,368 and 289,740 is: 611,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,368 : 289,740 = 289,740 : x
  2. Step 2: Convert to fraction form
    137,368/289,740 = 289,740/x
  3. Step 3: Cross multiply
    137,368x = 289,740 × 289,740
  4. Step 4: Simplify right side
    137,368x = 83,949,267,600
  5. Step 5: Solve for x
    x = 83,949,267,600/137,368
  6. Step 6: Final answer
    x = 611,126.81

Related Problems

Find third proportional to 68,684 and 144,870
Half scale
Find third proportional to 274,736 and 579,480
Double scale
Find third proportional to 137,370 and 289,744
Similar ratio
Find third proportional to 206,052 and 434,610
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.