Home / 256,078.50-387,637.50

Finding the Third Proportional to 256,078.50 and 387,637.50

Calculator

Solution

The third proportional to 256,078.50 and 387,637.50 is: 586,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,078.50 : 387,637.50 = 387,637.50 : x
  2. Step 2: Convert to fraction form
    256,078.50/387,637.50 = 387,637.50/x
  3. Step 3: Cross multiply
    256,078.50x = 387,637.50 × 387,637.50
  4. Step 4: Simplify right side
    256,078.50x = 150,262,831,406.25
  5. Step 5: Solve for x
    x = 150,262,831,406.25/256,078.50
  6. Step 6: Final answer
    x = 586,784.25

Related Problems

Find third proportional to 128,039.25 and 193,818.75
Half scale
Find third proportional to 512,157 and 775,275
Double scale
Find third proportional to 256,081 and 387,641
Similar ratio
Find third proportional to 384,117.75 and 581,456.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.