Home / 153,489-313,219

Finding the Third Proportional to 153,489 and 313,219

Calculator

Solution

The third proportional to 153,489 and 313,219 is: 639,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,489 : 313,219 = 313,219 : x
  2. Step 2: Convert to fraction form
    153,489/313,219 = 313,219/x
  3. Step 3: Cross multiply
    153,489x = 313,219 × 313,219
  4. Step 4: Simplify right side
    153,489x = 98,106,141,961
  5. Step 5: Solve for x
    x = 98,106,141,961/153,489
  6. Step 6: Final answer
    x = 639,173.76

Related Problems

Find third proportional to 76,744.50 and 156,609.50
Half scale
Find third proportional to 306,978 and 626,438
Double scale
Find third proportional to 153,491 and 313,223
Similar ratio
Find third proportional to 230,233.50 and 469,828.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.