Home / 278,440-424,188

Finding the Third Proportional to 278,440 and 424,188

Calculator

Solution

The third proportional to 278,440 and 424,188 is: 646,227.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,440 : 424,188 = 424,188 : x
  2. Step 2: Convert to fraction form
    278,440/424,188 = 424,188/x
  3. Step 3: Cross multiply
    278,440x = 424,188 × 424,188
  4. Step 4: Simplify right side
    278,440x = 179,935,459,344
  5. Step 5: Solve for x
    x = 179,935,459,344/278,440
  6. Step 6: Final answer
    x = 646,227.05

Related Problems

Find third proportional to 139,220 and 212,094
Half scale
Find third proportional to 556,880 and 848,376
Double scale
Find third proportional to 278,442 and 424,191
Similar ratio
Find third proportional to 417,660 and 636,282
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.