Home / 260,442-391,357

Finding the Third Proportional to 260,442 and 391,357

Calculator

Solution

The third proportional to 260,442 and 391,357 is: 588,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,442 : 391,357 = 391,357 : x
  2. Step 2: Convert to fraction form
    260,442/391,357 = 391,357/x
  3. Step 3: Cross multiply
    260,442x = 391,357 × 391,357
  4. Step 4: Simplify right side
    260,442x = 153,160,301,449
  5. Step 5: Solve for x
    x = 153,160,301,449/260,442
  6. Step 6: Final answer
    x = 588,078.35

Related Problems

Find third proportional to 130,221 and 195,678.50
Half scale
Find third proportional to 520,884 and 782,714
Double scale
Find third proportional to 260,444 and 391,360
Similar ratio
Find third proportional to 390,663 and 587,035.50
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.