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Finding the Fourth Proportional to 643,662.33, 965,540.88 and 170,344.50

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Solution

The fourth proportional to 643,662.33, 965,540.88 and 170,344.50 is: 255,529.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,662.33 : 965,540.88 = 170,344.50 : x
  2. Step 2: Convert to fraction form
    643,662.33/965,540.88 = 170,344.50/x
  3. Step 3: Cross multiply
    643,662.33x = 965,540.88 × 170,344.50
  4. Step 4: Simplify right side
    643,662.33x = 164,474,578,433.16
  5. Step 5: Solve for x
    x = 164,474,578,433.16/643,662.33
  6. Step 6: Final answer
    x = 255,529.29

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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.