Home / 207,626-287,618

Finding the Third Proportional to 207,626 and 287,618

Calculator

Solution

The third proportional to 207,626 and 287,618 is: 398,428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,626 : 287,618 = 287,618 : x
  2. Step 2: Convert to fraction form
    207,626/287,618 = 287,618/x
  3. Step 3: Cross multiply
    207,626x = 287,618 × 287,618
  4. Step 4: Simplify right side
    207,626x = 82,724,113,924
  5. Step 5: Solve for x
    x = 82,724,113,924/207,626
  6. Step 6: Final answer
    x = 398,428.49

Related Problems

Find third proportional to 103,813 and 143,809
Half scale
Find third proportional to 415,252 and 575,236
Double scale
Find third proportional to 207,628 and 287,621
Similar ratio
Find third proportional to 311,439 and 431,427
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.