Home / 128,632-266,964

Finding the Third Proportional to 128,632 and 266,964

Calculator

Solution

The third proportional to 128,632 and 266,964 is: 554,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,632 : 266,964 = 266,964 : x
  2. Step 2: Convert to fraction form
    128,632/266,964 = 266,964/x
  3. Step 3: Cross multiply
    128,632x = 266,964 × 266,964
  4. Step 4: Simplify right side
    128,632x = 71,269,777,296
  5. Step 5: Solve for x
    x = 71,269,777,296/128,632
  6. Step 6: Final answer
    x = 554,059.47

Related Problems

Find third proportional to 64,316 and 133,482
Half scale
Find third proportional to 257,264 and 533,928
Double scale
Find third proportional to 128,634 and 266,968
Similar ratio
Find third proportional to 192,948 and 400,446
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.