Home / 243,129-379,455

Finding the Third Proportional to 243,129 and 379,455

Calculator

Solution

The third proportional to 243,129 and 379,455 is: 592,220.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,129 : 379,455 = 379,455 : x
  2. Step 2: Convert to fraction form
    243,129/379,455 = 379,455/x
  3. Step 3: Cross multiply
    243,129x = 379,455 × 379,455
  4. Step 4: Simplify right side
    243,129x = 143,986,097,025
  5. Step 5: Solve for x
    x = 143,986,097,025/243,129
  6. Step 6: Final answer
    x = 592,220.99

Related Problems

Find third proportional to 121,564.50 and 189,727.50
Half scale
Find third proportional to 486,258 and 758,910
Double scale
Find third proportional to 243,131 and 379,458
Similar ratio
Find third proportional to 364,693.50 and 569,182.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.