Home / 390,878.52-539,421.48-218,792.20

Finding the Fourth Proportional to 390,878.52, 539,421.48 and 218,792.20

Calculator

Solution

The fourth proportional to 390,878.52, 539,421.48 and 218,792.20 is: 301,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,878.52 : 539,421.48 = 218,792.20 : x
  2. Step 2: Convert to fraction form
    390,878.52/539,421.48 = 218,792.20/x
  3. Step 3: Cross multiply
    390,878.52x = 539,421.48 × 218,792.20
  4. Step 4: Simplify right side
    390,878.52x = 118,021,212,336.46
  5. Step 5: Solve for x
    x = 118,021,212,336.46/390,878.52
  6. Step 6: Final answer
    x = 301,938.34

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.