Home / 257,176-398,172

Finding the Third Proportional to 257,176 and 398,172

Calculator

Solution

The third proportional to 257,176 and 398,172 is: 616,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,176 : 398,172 = 398,172 : x
  2. Step 2: Convert to fraction form
    257,176/398,172 = 398,172/x
  3. Step 3: Cross multiply
    257,176x = 398,172 × 398,172
  4. Step 4: Simplify right side
    257,176x = 158,540,941,584
  5. Step 5: Solve for x
    x = 158,540,941,584/257,176
  6. Step 6: Final answer
    x = 616,468.65

Related Problems

Find third proportional to 128,588 and 199,086
Half scale
Find third proportional to 514,352 and 796,344
Double scale
Find third proportional to 257,178 and 398,175
Similar ratio
Find third proportional to 385,764 and 597,258
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.