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Finding the Fourth Proportional to 306,228.70, 422,619.15 and 170,273.98

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Solution

The fourth proportional to 306,228.70, 422,619.15 and 170,273.98 is: 234,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,228.70 : 422,619.15 = 170,273.98 : x
  2. Step 2: Convert to fraction form
    306,228.70/422,619.15 = 170,273.98/x
  3. Step 3: Cross multiply
    306,228.70x = 422,619.15 × 170,273.98
  4. Step 4: Simplify right side
    306,228.70x = 71,961,044,694.72
  5. Step 5: Solve for x
    x = 71,961,044,694.72/306,228.70
  6. Step 6: Final answer
    x = 234,991.18

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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.