Home / 207,316-320,138

Finding the Third Proportional to 207,316 and 320,138

Calculator

Solution

The third proportional to 207,316 and 320,138 is: 494,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,316 : 320,138 = 320,138 : x
  2. Step 2: Convert to fraction form
    207,316/320,138 = 320,138/x
  3. Step 3: Cross multiply
    207,316x = 320,138 × 320,138
  4. Step 4: Simplify right side
    207,316x = 102,488,339,044
  5. Step 5: Solve for x
    x = 102,488,339,044/207,316
  6. Step 6: Final answer
    x = 494,358.08

Related Problems

Find third proportional to 103,658 and 160,069
Half scale
Find third proportional to 414,632 and 640,276
Double scale
Find third proportional to 207,318 and 320,141
Similar ratio
Find third proportional to 310,974 and 480,207
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.