Home / 155,436-278,889

Finding the Third Proportional to 155,436 and 278,889

Calculator

Solution

The third proportional to 155,436 and 278,889 is: 500,392.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,436 : 278,889 = 278,889 : x
  2. Step 2: Convert to fraction form
    155,436/278,889 = 278,889/x
  3. Step 3: Cross multiply
    155,436x = 278,889 × 278,889
  4. Step 4: Simplify right side
    155,436x = 77,779,074,321
  5. Step 5: Solve for x
    x = 77,779,074,321/155,436
  6. Step 6: Final answer
    x = 500,392.92

Related Problems

Find third proportional to 77,718 and 139,444.50
Half scale
Find third proportional to 310,872 and 557,778
Double scale
Find third proportional to 155,438 and 278,893
Similar ratio
Find third proportional to 233,154 and 418,333.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.