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Finding the Fourth Proportional to 299,612.20, 449,483.10 and 99,898.60

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Solution

The fourth proportional to 299,612.20, 449,483.10 and 99,898.60 is: 149,869.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,612.20 : 449,483.10 = 99,898.60 : x
  2. Step 2: Convert to fraction form
    299,612.20/449,483.10 = 99,898.60/x
  3. Step 3: Cross multiply
    299,612.20x = 449,483.10 × 99,898.60
  4. Step 4: Simplify right side
    299,612.20x = 44,902,732,413.66
  5. Step 5: Solve for x
    x = 44,902,732,413.66/299,612.20
  6. Step 6: Final answer
    x = 149,869.51

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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.