Home / 355,826.57-490,992.17-212,556.20

Finding the Fourth Proportional to 355,826.57, 490,992.17 and 212,556.20

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Solution

The fourth proportional to 355,826.57, 490,992.17 and 212,556.20 is: 293,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,826.57 : 490,992.17 = 212,556.20 : x
  2. Step 2: Convert to fraction form
    355,826.57/490,992.17 = 212,556.20/x
  3. Step 3: Cross multiply
    355,826.57x = 490,992.17 × 212,556.20
  4. Step 4: Simplify right side
    355,826.57x = 104,363,426,367.21
  5. Step 5: Solve for x
    x = 104,363,426,367.21/355,826.57
  6. Step 6: Final answer
    x = 293,298.58

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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.