Home / 378,920.25-522,909.99-209,154.42

Finding the Fourth Proportional to 378,920.25, 522,909.99 and 209,154.42

Calculator

Solution

The fourth proportional to 378,920.25, 522,909.99 and 209,154.42 is: 288,633.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,920.25 : 522,909.99 = 209,154.42 : x
  2. Step 2: Convert to fraction form
    378,920.25/522,909.99 = 209,154.42/x
  3. Step 3: Cross multiply
    378,920.25x = 522,909.99 × 209,154.42
  4. Step 4: Simplify right side
    378,920.25x = 109,368,935,670.66
  5. Step 5: Solve for x
    x = 109,368,935,670.66/378,920.25
  6. Step 6: Final answer
    x = 288,633.12

Related Problems

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.