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Finding the Fourth Proportional to 298,949,702.40, 448,424,553.60 and 221,465,604.60

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Solution

The fourth proportional to 298,949,702.40, 448,424,553.60 and 221,465,604.60 is: 332,198,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,949,702.40 : 448,424,553.60 = 221,465,604.60 : x
  2. Step 2: Convert to fraction form
    298,949,702.40/448,424,553.60 = 221,465,604.60/x
  3. Step 3: Cross multiply
    298,949,702.40x = 448,424,553.60 × 221,465,604.60
  4. Step 4: Simplify right side
    298,949,702.40x = 99,310,614,880,509,104
  5. Step 5: Solve for x
    x = 99,310,614,880,509,104/298,949,702.40
  6. Step 6: Final answer
    x = 332,198,406.90

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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.