Home / 431,625.32-647,837.28-218,543

Finding the Fourth Proportional to 431,625.32, 647,837.28 and 218,543

Calculator

Solution

The fourth proportional to 431,625.32, 647,837.28 and 218,543 is: 328,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,625.32 : 647,837.28 = 218,543 : x
  2. Step 2: Convert to fraction form
    431,625.32/647,837.28 = 218,543/x
  3. Step 3: Cross multiply
    431,625.32x = 647,837.28 × 218,543
  4. Step 4: Simplify right side
    431,625.32x = 141,580,302,683.04
  5. Step 5: Solve for x
    x = 141,580,302,683.04/431,625.32
  6. Step 6: Final answer
    x = 328,016.68

Related Problems

Find fourth proportional to 215,812.66, 323,918.64 and 109,271.50
Half scale
Find fourth proportional to 863,250.64, 1,295,674.56 and 437,086
Double scale
Find fourth proportional to 431,626.32, 647,838.78 and 218,544
Similar ratio
Find fourth proportional to 647,437.98, 971,755.92 and 327,814.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.