Home / 256,392-342,828

Finding the Third Proportional to 256,392 and 342,828

Calculator

Solution

The third proportional to 256,392 and 342,828 is: 458,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,392 : 342,828 = 342,828 : x
  2. Step 2: Convert to fraction form
    256,392/342,828 = 342,828/x
  3. Step 3: Cross multiply
    256,392x = 342,828 × 342,828
  4. Step 4: Simplify right side
    256,392x = 117,531,037,584
  5. Step 5: Solve for x
    x = 117,531,037,584/256,392
  6. Step 6: Final answer
    x = 458,403.68

Related Problems

Find third proportional to 128,196 and 171,414
Half scale
Find third proportional to 512,784 and 685,656
Double scale
Find third proportional to 256,394 and 342,831
Similar ratio
Find third proportional to 384,588 and 514,242
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.