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Finding the Fourth Proportional to 298,974.60, 448,461.90 and 121,608.90

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Solution

The fourth proportional to 298,974.60, 448,461.90 and 121,608.90 is: 182,413.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,974.60 : 448,461.90 = 121,608.90 : x
  2. Step 2: Convert to fraction form
    298,974.60/448,461.90 = 121,608.90/x
  3. Step 3: Cross multiply
    298,974.60x = 448,461.90 × 121,608.90
  4. Step 4: Simplify right side
    298,974.60x = 54,536,958,350.91
  5. Step 5: Solve for x
    x = 54,536,958,350.91/298,974.60
  6. Step 6: Final answer
    x = 182,413.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.