Home / 218,733-279,498

Finding the Third Proportional to 218,733 and 279,498

Calculator

Solution

The third proportional to 218,733 and 279,498 is: 357,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,733 : 279,498 = 279,498 : x
  2. Step 2: Convert to fraction form
    218,733/279,498 = 279,498/x
  3. Step 3: Cross multiply
    218,733x = 279,498 × 279,498
  4. Step 4: Simplify right side
    218,733x = 78,119,132,004
  5. Step 5: Solve for x
    x = 78,119,132,004/218,733
  6. Step 6: Final answer
    x = 357,143.79

Related Problems

Find third proportional to 109,366.50 and 139,749
Half scale
Find third proportional to 437,466 and 558,996
Double scale
Find third proportional to 218,735 and 279,501
Similar ratio
Find third proportional to 328,099.50 and 419,247
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.