Home / 99,489-208,590

Finding the Third Proportional to 99,489 and 208,590

Calculator

Solution

The third proportional to 99,489 and 208,590 is: 437,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,489 : 208,590 = 208,590 : x
  2. Step 2: Convert to fraction form
    99,489/208,590 = 208,590/x
  3. Step 3: Cross multiply
    99,489x = 208,590 × 208,590
  4. Step 4: Simplify right side
    99,489x = 43,509,788,100
  5. Step 5: Solve for x
    x = 43,509,788,100/99,489
  6. Step 6: Final answer
    x = 437,332.65

Related Problems

Find third proportional to 49,744.50 and 104,295
Half scale
Find third proportional to 198,978 and 417,180
Double scale
Find third proportional to 99,491 and 208,594
Similar ratio
Find third proportional to 149,233.50 and 312,885
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.