Home / 394,940.80-545,015.84-213,652

Finding the Fourth Proportional to 394,940.80, 545,015.84 and 213,652

Calculator

Solution

The fourth proportional to 394,940.80, 545,015.84 and 213,652 is: 294,838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,940.80 : 545,015.84 = 213,652 : x
  2. Step 2: Convert to fraction form
    394,940.80/545,015.84 = 213,652/x
  3. Step 3: Cross multiply
    394,940.80x = 545,015.84 × 213,652
  4. Step 4: Simplify right side
    394,940.80x = 116,443,724,247.68
  5. Step 5: Solve for x
    x = 116,443,724,247.68/394,940.80
  6. Step 6: Final answer
    x = 294,838.43

Related Problems

Find fourth proportional to 197,470.40, 272,507.92 and 106,826
Half scale
Find fourth proportional to 789,881.60, 1,090,031.68 and 427,304
Double scale
Find fourth proportional to 394,941.80, 545,017.22 and 213,653
Similar ratio
Find fourth proportional to 592,411.20, 817,523.76 and 320,478
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.