Home / 155,988-319,370

Finding the Third Proportional to 155,988 and 319,370

Calculator

Solution

The third proportional to 155,988 and 319,370 is: 653,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,988 : 319,370 = 319,370 : x
  2. Step 2: Convert to fraction form
    155,988/319,370 = 319,370/x
  3. Step 3: Cross multiply
    155,988x = 319,370 × 319,370
  4. Step 4: Simplify right side
    155,988x = 101,997,196,900
  5. Step 5: Solve for x
    x = 101,997,196,900/155,988
  6. Step 6: Final answer
    x = 653,878.48

Related Problems

Find third proportional to 77,994 and 159,685
Half scale
Find third proportional to 311,976 and 638,740
Double scale
Find third proportional to 155,990 and 319,374
Similar ratio
Find third proportional to 233,982 and 479,055
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.