Home / 145,330-312,921

Finding the Third Proportional to 145,330 and 312,921

Calculator

Solution

The third proportional to 145,330 and 312,921 is: 673,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,330 : 312,921 = 312,921 : x
  2. Step 2: Convert to fraction form
    145,330/312,921 = 312,921/x
  3. Step 3: Cross multiply
    145,330x = 312,921 × 312,921
  4. Step 4: Simplify right side
    145,330x = 97,919,552,241
  5. Step 5: Solve for x
    x = 97,919,552,241/145,330
  6. Step 6: Final answer
    x = 673,773.84

Related Problems

Find third proportional to 72,665 and 156,460.50
Half scale
Find third proportional to 290,660 and 625,842
Double scale
Find third proportional to 145,332 and 312,925
Similar ratio
Find third proportional to 217,995 and 469,381.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.