Home / 280,268-402,906

Finding the Third Proportional to 280,268 and 402,906

Calculator

Solution

The third proportional to 280,268 and 402,906 is: 579,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,268 : 402,906 = 402,906 : x
  2. Step 2: Convert to fraction form
    280,268/402,906 = 402,906/x
  3. Step 3: Cross multiply
    280,268x = 402,906 × 402,906
  4. Step 4: Simplify right side
    280,268x = 162,333,244,836
  5. Step 5: Solve for x
    x = 162,333,244,836/280,268
  6. Step 6: Final answer
    x = 579,207.20

Related Problems

Find third proportional to 140,134 and 201,453
Half scale
Find third proportional to 560,536 and 805,812
Double scale
Find third proportional to 280,270 and 402,909
Similar ratio
Find third proportional to 420,402 and 604,359
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.