Home / 128,352-279,078

Finding the Third Proportional to 128,352 and 279,078

Calculator

Solution

The third proportional to 128,352 and 279,078 is: 606,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,352 : 279,078 = 279,078 : x
  2. Step 2: Convert to fraction form
    128,352/279,078 = 279,078/x
  3. Step 3: Cross multiply
    128,352x = 279,078 × 279,078
  4. Step 4: Simplify right side
    128,352x = 77,884,530,084
  5. Step 5: Solve for x
    x = 77,884,530,084/128,352
  6. Step 6: Final answer
    x = 606,804.18

Related Problems

Find third proportional to 64,176 and 139,539
Half scale
Find third proportional to 256,704 and 558,156
Double scale
Find third proportional to 128,354 and 279,082
Similar ratio
Find third proportional to 192,528 and 418,617
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.