Home / 402,336.18-555,233.22-221,059.44

Finding the Fourth Proportional to 402,336.18, 555,233.22 and 221,059.44

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Solution

The fourth proportional to 402,336.18, 555,233.22 and 221,059.44 is: 305,067.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,336.18 : 555,233.22 = 221,059.44 : x
  2. Step 2: Convert to fraction form
    402,336.18/555,233.22 = 221,059.44/x
  3. Step 3: Cross multiply
    402,336.18x = 555,233.22 × 221,059.44
  4. Step 4: Simplify right side
    402,336.18x = 122,739,544,682.60
  5. Step 5: Solve for x
    x = 122,739,544,682.60/402,336.18
  6. Step 6: Final answer
    x = 305,067.13

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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.