Home / 355,418.36-490,478.32-212,175.33

Finding the Fourth Proportional to 355,418.36, 490,478.32 and 212,175.33

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Solution

The fourth proportional to 355,418.36, 490,478.32 and 212,175.33 is: 292,802.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,418.36 : 490,478.32 = 212,175.33 : x
  2. Step 2: Convert to fraction form
    355,418.36/490,478.32 = 212,175.33/x
  3. Step 3: Cross multiply
    355,418.36x = 490,478.32 × 212,175.33
  4. Step 4: Simplify right side
    355,418.36x = 104,067,399,403.85
  5. Step 5: Solve for x
    x = 104,067,399,403.85/355,418.36
  6. Step 6: Final answer
    x = 292,802.54

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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.