Home / 131,511-287,619

Finding the Third Proportional to 131,511 and 287,619

Calculator

Solution

The third proportional to 131,511 and 287,619 is: 629,032.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,511 : 287,619 = 287,619 : x
  2. Step 2: Convert to fraction form
    131,511/287,619 = 287,619/x
  3. Step 3: Cross multiply
    131,511x = 287,619 × 287,619
  4. Step 4: Simplify right side
    131,511x = 82,724,689,161
  5. Step 5: Solve for x
    x = 82,724,689,161/131,511
  6. Step 6: Final answer
    x = 629,032.47

Related Problems

Find third proportional to 65,755.50 and 143,809.50
Half scale
Find third proportional to 263,022 and 575,238
Double scale
Find third proportional to 131,513 and 287,623
Similar ratio
Find third proportional to 197,266.50 and 431,428.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.