Home / 245,758.50-390,768.75

Finding the Third Proportional to 245,758.50 and 390,768.75

Calculator

Solution

The third proportional to 245,758.50 and 390,768.75 is: 621,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,758.50 : 390,768.75 = 390,768.75 : x
  2. Step 2: Convert to fraction form
    245,758.50/390,768.75 = 390,768.75/x
  3. Step 3: Cross multiply
    245,758.50x = 390,768.75 × 390,768.75
  4. Step 4: Simplify right side
    245,758.50x = 152,700,215,976.56
  5. Step 5: Solve for x
    x = 152,700,215,976.56/245,758.50
  6. Step 6: Final answer
    x = 621,342.56

Related Problems

Find third proportional to 122,879.25 and 195,384.38
Half scale
Find third proportional to 491,517 and 781,537.50
Double scale
Find third proportional to 245,761 and 390,772
Similar ratio
Find third proportional to 368,637.75 and 586,153.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.