Home / 120,120-278,047

Finding the Third Proportional to 120,120 and 278,047

Calculator

Solution

The third proportional to 120,120 and 278,047 is: 643,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,120 : 278,047 = 278,047 : x
  2. Step 2: Convert to fraction form
    120,120/278,047 = 278,047/x
  3. Step 3: Cross multiply
    120,120x = 278,047 × 278,047
  4. Step 4: Simplify right side
    120,120x = 77,310,134,209
  5. Step 5: Solve for x
    x = 77,310,134,209/120,120
  6. Step 6: Final answer
    x = 643,607.51

Related Problems

Find third proportional to 60,060 and 139,023.50
Half scale
Find third proportional to 240,240 and 556,094
Double scale
Find third proportional to 120,122 and 278,052
Similar ratio
Find third proportional to 180,180 and 417,070.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.