Home / 399,383,005.98-551,137,975.88-223,172,449.30

Finding the Fourth Proportional to 399,383,005.98, 551,137,975.88 and 223,172,449.30

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Solution

The fourth proportional to 399,383,005.98, 551,137,975.88 and 223,172,449.30 is: 307,972,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,383,005.98 : 551,137,975.88 = 223,172,449.30 : x
  2. Step 2: Convert to fraction form
    399,383,005.98/551,137,975.88 = 223,172,449.30/x
  3. Step 3: Cross multiply
    399,383,005.98x = 551,137,975.88 × 223,172,449.30
  4. Step 4: Simplify right side
    399,383,005.98x = 122,998,811,979,383,936
  5. Step 5: Solve for x
    x = 122,998,811,979,383,936/399,383,005.98
  6. Step 6: Final answer
    x = 307,972,072.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.