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Finding the Fourth Proportional to 307,579.60, 460,980.60 and 274,142.80

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Solution

The fourth proportional to 307,579.60, 460,980.60 and 274,142.80 is: 410,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,579.60 : 460,980.60 = 274,142.80 : x
  2. Step 2: Convert to fraction form
    307,579.60/460,980.60 = 274,142.80/x
  3. Step 3: Cross multiply
    307,579.60x = 460,980.60 × 274,142.80
  4. Step 4: Simplify right side
    307,579.60x = 126,374,512,429.68
  5. Step 5: Solve for x
    x = 126,374,512,429.68/307,579.60
  6. Step 6: Final answer
    x = 410,867.67

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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.