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Finding the Fourth Proportional to 665,896.42, 998,853.85 and 216,619.64

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Solution

The fourth proportional to 665,896.42, 998,853.85 and 216,619.64 is: 324,932.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,896.42 : 998,853.85 = 216,619.64 : x
  2. Step 2: Convert to fraction form
    665,896.42/998,853.85 = 216,619.64/x
  3. Step 3: Cross multiply
    665,896.42x = 998,853.85 × 216,619.64
  4. Step 4: Simplify right side
    665,896.42x = 216,371,361,399.61
  5. Step 5: Solve for x
    x = 216,371,361,399.61/665,896.42
  6. Step 6: Final answer
    x = 324,932.46

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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.