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Finding the Fourth Proportional to 221,227,999.70, 309,145,243.30 and 221,227,999.70

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Solution

The fourth proportional to 221,227,999.70, 309,145,243.30 and 221,227,999.70 is: 309,145,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,227,999.70 : 309,145,243.30 = 221,227,999.70 : x
  2. Step 2: Convert to fraction form
    221,227,999.70/309,145,243.30 = 221,227,999.70/x
  3. Step 3: Cross multiply
    221,227,999.70x = 309,145,243.30 × 221,227,999.70
  4. Step 4: Simplify right side
    221,227,999.70x = 68,391,583,792,028,824
  5. Step 5: Solve for x
    x = 68,391,583,792,028,824/221,227,999.70
  6. Step 6: Final answer
    x = 309,145,243.30

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1.5x scale

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.