Home / 354,998,418.31-489,946,483.79-204,287,976.78

Finding the Fourth Proportional to 354,998,418.31, 489,946,483.79 and 204,287,976.78

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Solution

The fourth proportional to 354,998,418.31, 489,946,483.79 and 204,287,976.78 is: 281,945,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,998,418.31 : 489,946,483.79 = 204,287,976.78 : x
  2. Step 2: Convert to fraction form
    354,998,418.31/489,946,483.79 = 204,287,976.78/x
  3. Step 3: Cross multiply
    354,998,418.31x = 489,946,483.79 × 204,287,976.78
  4. Step 4: Simplify right side
    354,998,418.31x = 100,090,175,903,934,176
  5. Step 5: Solve for x
    x = 100,090,175,903,934,176/354,998,418.31
  6. Step 6: Final answer
    x = 281,945,413.67

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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.