Home / 355,109,209.63-490,067,789.51-196,336,394.70

Finding the Fourth Proportional to 355,109,209.63, 490,067,789.51 and 196,336,394.70

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Solution

The fourth proportional to 355,109,209.63, 490,067,789.51 and 196,336,394.70 is: 270,953,668.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,109,209.63 : 490,067,789.51 = 196,336,394.70 : x
  2. Step 2: Convert to fraction form
    355,109,209.63/490,067,789.51 = 196,336,394.70/x
  3. Step 3: Cross multiply
    355,109,209.63x = 490,067,789.51 × 196,336,394.70
  4. Step 4: Simplify right side
    355,109,209.63x = 96,218,142,949,644,960
  5. Step 5: Solve for x
    x = 96,218,142,949,644,960/355,109,209.63
  6. Step 6: Final answer
    x = 270,953,668.17

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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.