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Finding the Fourth Proportional to 313,620.80, 470,236.80 and 180,435.20

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Solution

The fourth proportional to 313,620.80, 470,236.80 and 180,435.20 is: 270,540.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,620.80 : 470,236.80 = 180,435.20 : x
  2. Step 2: Convert to fraction form
    313,620.80/470,236.80 = 180,435.20/x
  3. Step 3: Cross multiply
    313,620.80x = 470,236.80 × 180,435.20
  4. Step 4: Simplify right side
    313,620.80x = 84,847,271,055.36
  5. Step 5: Solve for x
    x = 84,847,271,055.36/313,620.80
  6. Step 6: Final answer
    x = 270,540.96

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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.