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Finding the Fourth Proportional to 298,950,998.40, 448,426,497.60 and 221,466,900.60

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Solution

The fourth proportional to 298,950,998.40, 448,426,497.60 and 221,466,900.60 is: 332,200,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,950,998.40 : 448,426,497.60 = 221,466,900.60 : x
  2. Step 2: Convert to fraction form
    298,950,998.40/448,426,497.60 = 221,466,900.60/x
  3. Step 3: Cross multiply
    298,950,998.40x = 448,426,497.60 × 221,466,900.60
  4. Step 4: Simplify right side
    298,950,998.40x = 99,311,626,570,385,344
  5. Step 5: Solve for x
    x = 99,311,626,570,385,344/298,950,998.40
  6. Step 6: Final answer
    x = 332,200,350.90

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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.