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Finding the Fourth Proportional to 204,653.28, 307,021.44 and 64,379.28

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Solution

The fourth proportional to 204,653.28, 307,021.44 and 64,379.28 is: 96,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,653.28 : 307,021.44 = 64,379.28 : x
  2. Step 2: Convert to fraction form
    204,653.28/307,021.44 = 64,379.28/x
  3. Step 3: Cross multiply
    204,653.28x = 307,021.44 × 64,379.28
  4. Step 4: Simplify right side
    204,653.28x = 19,765,819,251.76
  5. Step 5: Solve for x
    x = 19,765,819,251.76/204,653.28
  6. Step 6: Final answer
    x = 96,581.98

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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.