Home / 213,299-319,621.50

Finding the Third Proportional to 213,299 and 319,621.50

Calculator

Solution

The third proportional to 213,299 and 319,621.50 is: 478,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,299 : 319,621.50 = 319,621.50 : x
  2. Step 2: Convert to fraction form
    213,299/319,621.50 = 319,621.50/x
  3. Step 3: Cross multiply
    213,299x = 319,621.50 × 319,621.50
  4. Step 4: Simplify right side
    213,299x = 102,157,903,262.25
  5. Step 5: Solve for x
    x = 102,157,903,262.25/213,299
  6. Step 6: Final answer
    x = 478,942.25

Related Problems

Find third proportional to 106,649.50 and 159,810.75
Half scale
Find third proportional to 426,598 and 639,243
Double scale
Find third proportional to 213,301 and 319,624
Similar ratio
Find third proportional to 319,948.50 and 479,432.25
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.