Home / 257,665-385,313

Finding the Third Proportional to 257,665 and 385,313

Calculator

Solution

The third proportional to 257,665 and 385,313 is: 576,198.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,665 : 385,313 = 385,313 : x
  2. Step 2: Convert to fraction form
    257,665/385,313 = 385,313/x
  3. Step 3: Cross multiply
    257,665x = 385,313 × 385,313
  4. Step 4: Simplify right side
    257,665x = 148,466,107,969
  5. Step 5: Solve for x
    x = 148,466,107,969/257,665
  6. Step 6: Final answer
    x = 576,198.20

Related Problems

Find third proportional to 128,832.50 and 192,656.50
Half scale
Find third proportional to 515,330 and 770,626
Double scale
Find third proportional to 257,667 and 385,316
Similar ratio
Find third proportional to 386,497.50 and 577,969.50
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.