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Finding the Fourth Proportional to 258,983,958.84, 388,752,484.41 and 111,504,554.25

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Solution

The fourth proportional to 258,983,958.84, 388,752,484.41 and 111,504,554.25 is: 167,375,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,983,958.84 : 388,752,484.41 = 111,504,554.25 : x
  2. Step 2: Convert to fraction form
    258,983,958.84/388,752,484.41 = 111,504,554.25/x
  3. Step 3: Cross multiply
    258,983,958.84x = 388,752,484.41 × 111,504,554.25
  4. Step 4: Simplify right side
    258,983,958.84x = 43,347,672,487,717,128
  5. Step 5: Solve for x
    x = 43,347,672,487,717,128/258,983,958.84
  6. Step 6: Final answer
    x = 167,375,897.26

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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.