Home / 145,392-218,816

Finding the Third Proportional to 145,392 and 218,816

Calculator

Solution

The third proportional to 145,392 and 218,816 is: 329,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,392 : 218,816 = 218,816 : x
  2. Step 2: Convert to fraction form
    145,392/218,816 = 218,816/x
  3. Step 3: Cross multiply
    145,392x = 218,816 × 218,816
  4. Step 4: Simplify right side
    145,392x = 47,880,441,856
  5. Step 5: Solve for x
    x = 47,880,441,856/145,392
  6. Step 6: Final answer
    x = 329,319.65

Related Problems

Find third proportional to 72,696 and 109,408
Half scale
Find third proportional to 290,784 and 437,632
Double scale
Find third proportional to 145,394 and 218,819
Similar ratio
Find third proportional to 218,088 and 328,224
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.