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Finding the Fourth Proportional to 200,970, 301,243.56 and 67,803.60

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Solution

The fourth proportional to 200,970, 301,243.56 and 67,803.60 is: 101,634.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,970 : 301,243.56 = 67,803.60 : x
  2. Step 2: Convert to fraction form
    200,970/301,243.56 = 67,803.60/x
  3. Step 3: Cross multiply
    200,970x = 301,243.56 × 67,803.60
  4. Step 4: Simplify right side
    200,970x = 20,425,397,844.82
  5. Step 5: Solve for x
    x = 20,425,397,844.82/200,970
  6. Step 6: Final answer
    x = 101,634.06

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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.