Home / 120,511.50-285,511.50

Finding the Third Proportional to 120,511.50 and 285,511.50

Calculator

Solution

The third proportional to 120,511.50 and 285,511.50 is: 676,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,511.50 : 285,511.50 = 285,511.50 : x
  2. Step 2: Convert to fraction form
    120,511.50/285,511.50 = 285,511.50/x
  3. Step 3: Cross multiply
    120,511.50x = 285,511.50 × 285,511.50
  4. Step 4: Simplify right side
    120,511.50x = 81,516,816,632.25
  5. Step 5: Solve for x
    x = 81,516,816,632.25/120,511.50
  6. Step 6: Final answer
    x = 676,423.55

Related Problems

Find third proportional to 60,255.75 and 142,755.75
Half scale
Find third proportional to 241,023 and 571,023
Double scale
Find third proportional to 120,514 and 285,516
Similar ratio
Find third proportional to 180,767.25 and 428,267.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.