Home / 278,436-424,182

Finding the Third Proportional to 278,436 and 424,182

Calculator

Solution

The third proportional to 278,436 and 424,182 is: 646,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,436 : 424,182 = 424,182 : x
  2. Step 2: Convert to fraction form
    278,436/424,182 = 424,182/x
  3. Step 3: Cross multiply
    278,436x = 424,182 × 424,182
  4. Step 4: Simplify right side
    278,436x = 179,930,369,124
  5. Step 5: Solve for x
    x = 179,930,369,124/278,436
  6. Step 6: Final answer
    x = 646,218.05

Related Problems

Find third proportional to 139,218 and 212,091
Half scale
Find third proportional to 556,872 and 848,364
Double scale
Find third proportional to 278,438 and 424,185
Similar ratio
Find third proportional to 417,654 and 636,273
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.