Home / 309,382,444,481.78-426,947,793,915.91-172,202,326,760.30

Finding the Fourth Proportional to 309,382,444,481.78, 426,947,793,915.91 and 172,202,326,760.30

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Solution

The fourth proportional to 309,382,444,481.78, 426,947,793,915.91 and 172,202,326,760.30 is: 237,639,222,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,382,444,481.78 : 426,947,793,915.91 = 172,202,326,760.30 : x
  2. Step 2: Convert to fraction form
    309,382,444,481.78/426,947,793,915.91 = 172,202,326,760.30/x
  3. Step 3: Cross multiply
    309,382,444,481.78x = 426,947,793,915.91 × 172,202,326,760.30
  4. Step 4: Simplify right side
    309,382,444,481.78x = 73,521,403,517,496,748,670,976
  5. Step 5: Solve for x
    x = 73,521,403,517,496,748,670,976/309,382,444,481.78
  6. Step 6: Final answer
    x = 237,639,222,356.80

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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.