Home / 128,184-279,432

Finding the Third Proportional to 128,184 and 279,432

Calculator

Solution

The third proportional to 128,184 and 279,432 is: 609,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,184 : 279,432 = 279,432 : x
  2. Step 2: Convert to fraction form
    128,184/279,432 = 279,432/x
  3. Step 3: Cross multiply
    128,184x = 279,432 × 279,432
  4. Step 4: Simplify right side
    128,184x = 78,082,242,624
  5. Step 5: Solve for x
    x = 78,082,242,624/128,184
  6. Step 6: Final answer
    x = 609,141.88

Related Problems

Find third proportional to 64,092 and 139,716
Half scale
Find third proportional to 256,368 and 558,864
Double scale
Find third proportional to 128,186 and 279,436
Similar ratio
Find third proportional to 192,276 and 419,148
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.