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Finding the Fourth Proportional to 318,313.53, 477,501.44 and 115,964.60

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Solution

The fourth proportional to 318,313.53, 477,501.44 and 115,964.60 is: 173,958.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,313.53 : 477,501.44 = 115,964.60 : x
  2. Step 2: Convert to fraction form
    318,313.53/477,501.44 = 115,964.60/x
  3. Step 3: Cross multiply
    318,313.53x = 477,501.44 × 115,964.60
  4. Step 4: Simplify right side
    318,313.53x = 55,373,260,521.69
  5. Step 5: Solve for x
    x = 55,373,260,521.69/318,313.53
  6. Step 6: Final answer
    x = 173,958.24

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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.