Home / 256,506-561,288

Finding the Third Proportional to 256,506 and 561,288

Calculator

Solution

The third proportional to 256,506 and 561,288 is: 1,228,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,506 : 561,288 = 561,288 : x
  2. Step 2: Convert to fraction form
    256,506/561,288 = 561,288/x
  3. Step 3: Cross multiply
    256,506x = 561,288 × 561,288
  4. Step 4: Simplify right side
    256,506x = 315,044,218,944
  5. Step 5: Solve for x
    x = 315,044,218,944/256,506
  6. Step 6: Final answer
    x = 1,228,213.84

Related Problems

Find third proportional to 128,253 and 280,644
Half scale
Find third proportional to 513,012 and 1,122,576
Double scale
Find third proportional to 256,508 and 561,292
Similar ratio
Find third proportional to 384,759 and 841,932
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.