Home / 119,280-257,243

Finding the Third Proportional to 119,280 and 257,243

Calculator

Solution

The third proportional to 119,280 and 257,243 is: 554,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,280 : 257,243 = 257,243 : x
  2. Step 2: Convert to fraction form
    119,280/257,243 = 257,243/x
  3. Step 3: Cross multiply
    119,280x = 257,243 × 257,243
  4. Step 4: Simplify right side
    119,280x = 66,173,961,049
  5. Step 5: Solve for x
    x = 66,173,961,049/119,280
  6. Step 6: Final answer
    x = 554,778.35

Related Problems

Find third proportional to 59,640 and 128,621.50
Half scale
Find third proportional to 238,560 and 514,486
Double scale
Find third proportional to 119,282 and 257,247
Similar ratio
Find third proportional to 178,920 and 385,864.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.