Home / 217,125-478,424

Finding the Third Proportional to 217,125 and 478,424

Calculator

Solution

The third proportional to 217,125 and 478,424 is: 1,054,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,125 : 478,424 = 478,424 : x
  2. Step 2: Convert to fraction form
    217,125/478,424 = 478,424/x
  3. Step 3: Cross multiply
    217,125x = 478,424 × 478,424
  4. Step 4: Simplify right side
    217,125x = 228,889,523,776
  5. Step 5: Solve for x
    x = 228,889,523,776/217,125
  6. Step 6: Final answer
    x = 1,054,183.18

Related Problems

Find third proportional to 108,562.50 and 239,212
Half scale
Find third proportional to 434,250 and 956,848
Double scale
Find third proportional to 217,127 and 478,428
Similar ratio
Find third proportional to 325,687.50 and 717,636
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.