Home / 128,574-278,532

Finding the Third Proportional to 128,574 and 278,532

Calculator

Solution

The third proportional to 128,574 and 278,532 is: 603,388.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574 : 278,532 = 278,532 : x
  2. Step 2: Convert to fraction form
    128,574/278,532 = 278,532/x
  3. Step 3: Cross multiply
    128,574x = 278,532 × 278,532
  4. Step 4: Simplify right side
    128,574x = 77,580,075,024
  5. Step 5: Solve for x
    x = 77,580,075,024/128,574
  6. Step 6: Final answer
    x = 603,388.52

Related Problems

Find third proportional to 64,287 and 139,266
Half scale
Find third proportional to 257,148 and 557,064
Double scale
Find third proportional to 128,576 and 278,536
Similar ratio
Find third proportional to 192,861 and 417,798
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.