Home / 386,445.20-579,955.80-199,360.40

Finding the Fourth Proportional to 386,445.20, 579,955.80 and 199,360.40

Calculator

Solution

The fourth proportional to 386,445.20, 579,955.80 and 199,360.40 is: 299,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,445.20 : 579,955.80 = 199,360.40 : x
  2. Step 2: Convert to fraction form
    386,445.20/579,955.80 = 199,360.40/x
  3. Step 3: Cross multiply
    386,445.20x = 579,955.80 × 199,360.40
  4. Step 4: Simplify right side
    386,445.20x = 115,620,220,270.32
  5. Step 5: Solve for x
    x = 115,620,220,270.32/386,445.20
  6. Step 6: Final answer
    x = 299,189.17

Related Problems

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.