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Finding the Fourth Proportional to 354,934,979.56, 489,726,296.58 and 206,167,717

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Solution

The fourth proportional to 354,934,979.56, 489,726,296.58 and 206,167,717 is: 284,462,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,934,979.56 : 489,726,296.58 = 206,167,717 : x
  2. Step 2: Convert to fraction form
    354,934,979.56/489,726,296.58 = 206,167,717/x
  3. Step 3: Cross multiply
    354,934,979.56x = 489,726,296.58 × 206,167,717
  4. Step 4: Simplify right side
    354,934,979.56x = 100,965,752,520,763,504
  5. Step 5: Solve for x
    x = 100,965,752,520,763,504/354,934,979.56
  6. Step 6: Final answer
    x = 284,462,671.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.