Home / 278,442-424,191

Finding the Third Proportional to 278,442 and 424,191

Calculator

Solution

The third proportional to 278,442 and 424,191 is: 646,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,442 : 424,191 = 424,191 : x
  2. Step 2: Convert to fraction form
    278,442/424,191 = 424,191/x
  3. Step 3: Cross multiply
    278,442x = 424,191 × 424,191
  4. Step 4: Simplify right side
    278,442x = 179,938,004,481
  5. Step 5: Solve for x
    x = 179,938,004,481/278,442
  6. Step 6: Final answer
    x = 646,231.55

Related Problems

Find third proportional to 139,221 and 212,095.50
Half scale
Find third proportional to 556,884 and 848,382
Double scale
Find third proportional to 278,444 and 424,194
Similar ratio
Find third proportional to 417,663 and 636,286.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.