Home / 128,219-296,804.50

Finding the Third Proportional to 128,219 and 296,804.50

Calculator

Solution

The third proportional to 128,219 and 296,804.50 is: 687,050.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,219 : 296,804.50 = 296,804.50 : x
  2. Step 2: Convert to fraction form
    128,219/296,804.50 = 296,804.50/x
  3. Step 3: Cross multiply
    128,219x = 296,804.50 × 296,804.50
  4. Step 4: Simplify right side
    128,219x = 88,092,911,220.25
  5. Step 5: Solve for x
    x = 88,092,911,220.25/128,219
  6. Step 6: Final answer
    x = 687,050.37

Related Problems

Find third proportional to 64,109.50 and 148,402.25
Half scale
Find third proportional to 256,438 and 593,609
Double scale
Find third proportional to 128,221 and 296,809
Similar ratio
Find third proportional to 192,328.50 and 445,206.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.