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Finding the Fourth Proportional to 306,521.88, 422,936.80 and 179,172.84

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Solution

The fourth proportional to 306,521.88, 422,936.80 and 179,172.84 is: 247,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,521.88 : 422,936.80 = 179,172.84 : x
  2. Step 2: Convert to fraction form
    306,521.88/422,936.80 = 179,172.84/x
  3. Step 3: Cross multiply
    306,521.88x = 422,936.80 × 179,172.84
  4. Step 4: Simplify right side
    306,521.88x = 75,778,787,596.51
  5. Step 5: Solve for x
    x = 75,778,787,596.51/306,521.88
  6. Step 6: Final answer
    x = 247,221.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.