Home / 212,715-319,720.50

Finding the Third Proportional to 212,715 and 319,720.50

Calculator

Solution

The third proportional to 212,715 and 319,720.50 is: 480,554.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,715 : 319,720.50 = 319,720.50 : x
  2. Step 2: Convert to fraction form
    212,715/319,720.50 = 319,720.50/x
  3. Step 3: Cross multiply
    212,715x = 319,720.50 × 319,720.50
  4. Step 4: Simplify right side
    212,715x = 102,221,198,120.25
  5. Step 5: Solve for x
    x = 102,221,198,120.25/212,715
  6. Step 6: Final answer
    x = 480,554.72

Related Problems

Find third proportional to 106,357.50 and 159,860.25
Half scale
Find third proportional to 425,430 and 639,441
Double scale
Find third proportional to 212,717 and 319,724
Similar ratio
Find third proportional to 319,072.50 and 479,580.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.