Home / 140,319-306,890

Finding the Third Proportional to 140,319 and 306,890

Calculator

Solution

The third proportional to 140,319 and 306,890 is: 671,195.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,319 : 306,890 = 306,890 : x
  2. Step 2: Convert to fraction form
    140,319/306,890 = 306,890/x
  3. Step 3: Cross multiply
    140,319x = 306,890 × 306,890
  4. Step 4: Simplify right side
    140,319x = 94,181,472,100
  5. Step 5: Solve for x
    x = 94,181,472,100/140,319
  6. Step 6: Final answer
    x = 671,195.43

Related Problems

Find third proportional to 70,159.50 and 153,445
Half scale
Find third proportional to 280,638 and 613,780
Double scale
Find third proportional to 140,321 and 306,894
Similar ratio
Find third proportional to 210,478.50 and 460,335
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.