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Finding the Fourth Proportional to 296,709,621.80, 445,057,472.09 and 78,375,201.80

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Solution

The fourth proportional to 296,709,621.80, 445,057,472.09 and 78,375,201.80 is: 117,560,964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,709,621.80 : 445,057,472.09 = 78,375,201.80 : x
  2. Step 2: Convert to fraction form
    296,709,621.80/445,057,472.09 = 78,375,201.80/x
  3. Step 3: Cross multiply
    296,709,621.80x = 445,057,472.09 × 78,375,201.80
  4. Step 4: Simplify right side
    296,709,621.80x = 34,881,469,185,622,268
  5. Step 5: Solve for x
    x = 34,881,469,185,622,268/296,709,621.80
  6. Step 6: Final answer
    x = 117,560,964.07

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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.