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Finding the Fourth Proportional to 643,768.37, 965,689.44 and 170,441.42

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Solution

The fourth proportional to 643,768.37, 965,689.44 and 170,441.42 is: 255,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,768.37 : 965,689.44 = 170,441.42 : x
  2. Step 2: Convert to fraction form
    643,768.37/965,689.44 = 170,441.42/x
  3. Step 3: Cross multiply
    643,768.37x = 965,689.44 × 170,441.42
  4. Step 4: Simplify right side
    643,768.37x = 164,593,479,432.61
  5. Step 5: Solve for x
    x = 164,593,479,432.61/643,768.37
  6. Step 6: Final answer
    x = 255,671.90

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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.