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Finding the Fourth Proportional to 275,694,328.35, 386,940,610.91 and 275,694,328.35

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Solution

The fourth proportional to 275,694,328.35, 386,940,610.91 and 275,694,328.35 is: 386,940,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,694,328.35 : 386,940,610.91 = 275,694,328.35 : x
  2. Step 2: Convert to fraction form
    275,694,328.35/386,940,610.91 = 275,694,328.35/x
  3. Step 3: Cross multiply
    275,694,328.35x = 386,940,610.91 × 275,694,328.35
  4. Step 4: Simplify right side
    275,694,328.35x = 106,677,331,836,860,384
  5. Step 5: Solve for x
    x = 106,677,331,836,860,384/275,694,328.35
  6. Step 6: Final answer
    x = 386,940,610.91

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.