Home / 187,978-290,872

Finding the Third Proportional to 187,978 and 290,872

Calculator

Solution

The third proportional to 187,978 and 290,872 is: 450,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,978 : 290,872 = 290,872 : x
  2. Step 2: Convert to fraction form
    187,978/290,872 = 290,872/x
  3. Step 3: Cross multiply
    187,978x = 290,872 × 290,872
  4. Step 4: Simplify right side
    187,978x = 84,606,520,384
  5. Step 5: Solve for x
    x = 84,606,520,384/187,978
  6. Step 6: Final answer
    x = 450,087.35

Related Problems

Find third proportional to 93,989 and 145,436
Half scale
Find third proportional to 375,956 and 581,744
Double scale
Find third proportional to 187,980 and 290,875
Similar ratio
Find third proportional to 281,967 and 436,308
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.