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Finding the Fourth Proportional to 299,379,406.40, 449,069,109.60 and 262,353,204.80

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Solution

The fourth proportional to 299,379,406.40, 449,069,109.60 and 262,353,204.80 is: 393,529,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,379,406.40 : 449,069,109.60 = 262,353,204.80 : x
  2. Step 2: Convert to fraction form
    299,379,406.40/449,069,109.60 = 262,353,204.80/x
  3. Step 3: Cross multiply
    299,379,406.40x = 449,069,109.60 × 262,353,204.80
  4. Step 4: Simplify right side
    299,379,406.40x = 117,814,720,080,242,464
  5. Step 5: Solve for x
    x = 117,814,720,080,242,464/299,379,406.40
  6. Step 6: Final answer
    x = 393,529,807.20

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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.