Home / 143,840-306,128

Finding the Third Proportional to 143,840 and 306,128

Calculator

Solution

The third proportional to 143,840 and 306,128 is: 651,518.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840 : 306,128 = 306,128 : x
  2. Step 2: Convert to fraction form
    143,840/306,128 = 306,128/x
  3. Step 3: Cross multiply
    143,840x = 306,128 × 306,128
  4. Step 4: Simplify right side
    143,840x = 93,714,352,384
  5. Step 5: Solve for x
    x = 93,714,352,384/143,840
  6. Step 6: Final answer
    x = 651,518.02

Related Problems

Find third proportional to 71,920 and 153,064
Half scale
Find third proportional to 287,680 and 612,256
Double scale
Find third proportional to 143,842 and 306,132
Similar ratio
Find third proportional to 215,760 and 459,192
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.