Home / 251,386-351,640

Finding the Third Proportional to 251,386 and 351,640

Calculator

Solution

The third proportional to 251,386 and 351,640 is: 491,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,386 : 351,640 = 351,640 : x
  2. Step 2: Convert to fraction form
    251,386/351,640 = 351,640/x
  3. Step 3: Cross multiply
    251,386x = 351,640 × 351,640
  4. Step 4: Simplify right side
    251,386x = 123,650,689,600
  5. Step 5: Solve for x
    x = 123,650,689,600/251,386
  6. Step 6: Final answer
    x = 491,875.80

Related Problems

Find third proportional to 125,693 and 175,820
Half scale
Find third proportional to 502,772 and 703,280
Double scale
Find third proportional to 251,388 and 351,643
Similar ratio
Find third proportional to 377,079 and 527,460
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.