Home / 280,284-402,930

Finding the Third Proportional to 280,284 and 402,930

Calculator

Solution

The third proportional to 280,284 and 402,930 is: 579,243.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,284 : 402,930 = 402,930 : x
  2. Step 2: Convert to fraction form
    280,284/402,930 = 402,930/x
  3. Step 3: Cross multiply
    280,284x = 402,930 × 402,930
  4. Step 4: Simplify right side
    280,284x = 162,352,584,900
  5. Step 5: Solve for x
    x = 162,352,584,900/280,284
  6. Step 6: Final answer
    x = 579,243.14

Related Problems

Find third proportional to 140,142 and 201,465
Half scale
Find third proportional to 560,568 and 805,860
Double scale
Find third proportional to 280,286 and 402,933
Similar ratio
Find third proportional to 420,426 and 604,395
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.