Home / 399,383,005.35-551,137,975.02-223,172,448.68

Finding the Fourth Proportional to 399,383,005.35, 551,137,975.02 and 223,172,448.68

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Solution

The fourth proportional to 399,383,005.35, 551,137,975.02 and 223,172,448.68 is: 307,972,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,383,005.35 : 551,137,975.02 = 223,172,448.68 : x
  2. Step 2: Convert to fraction form
    399,383,005.35/551,137,975.02 = 223,172,448.68/x
  3. Step 3: Cross multiply
    399,383,005.35x = 551,137,975.02 × 223,172,448.68
  4. Step 4: Simplify right side
    399,383,005.35x = 122,998,811,442,994,384
  5. Step 5: Solve for x
    x = 122,998,811,442,994,384/399,383,005.35
  6. Step 6: Final answer
    x = 307,972,071.41

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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.