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Finding the Fourth Proportional to 313,449.80, 470,250.30 and 103,076.60

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Solution

The fourth proportional to 313,449.80, 470,250.30 and 103,076.60 is: 154,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,449.80 : 470,250.30 = 103,076.60 : x
  2. Step 2: Convert to fraction form
    313,449.80/470,250.30 = 103,076.60/x
  3. Step 3: Cross multiply
    313,449.80x = 470,250.30 × 103,076.60
  4. Step 4: Simplify right side
    313,449.80x = 48,471,802,072.98
  5. Step 5: Solve for x
    x = 48,471,802,072.98/313,449.80
  6. Step 6: Final answer
    x = 154,639.76

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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.