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Finding the Fourth Proportional to 404,285,863.85, 557,914,864.11 and 218,646,879.53

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Solution

The fourth proportional to 404,285,863.85, 557,914,864.11 and 218,646,879.53 is: 301,732,894.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,285,863.85 : 557,914,864.11 = 218,646,879.53 : x
  2. Step 2: Convert to fraction form
    404,285,863.85/557,914,864.11 = 218,646,879.53/x
  3. Step 3: Cross multiply
    404,285,863.85x = 557,914,864.11 × 218,646,879.53
  4. Step 4: Simplify right side
    404,285,863.85x = 121,986,344,081,055,488
  5. Step 5: Solve for x
    x = 121,986,344,081,055,488/404,285,863.85
  6. Step 6: Final answer
    x = 301,732,894.94

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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.