Home / 419,904,840.80-629,857,261.20-147,240,178.40

Finding the Fourth Proportional to 419,904,840.80, 629,857,261.20 and 147,240,178.40

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Solution

The fourth proportional to 419,904,840.80, 629,857,261.20 and 147,240,178.40 is: 220,860,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,840.80 : 629,857,261.20 = 147,240,178.40 : x
  2. Step 2: Convert to fraction form
    419,904,840.80/629,857,261.20 = 147,240,178.40/x
  3. Step 3: Cross multiply
    419,904,840.80x = 629,857,261.20 × 147,240,178.40
  4. Step 4: Simplify right side
    419,904,840.80x = 92,740,295,505,623,408
  5. Step 5: Solve for x
    x = 92,740,295,505,623,408/419,904,840.80
  6. Step 6: Final answer
    x = 220,860,267.60

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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.