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Finding the Fourth Proportional to 228,504.99, 315,372.48 and 130,388.42

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Solution

The fourth proportional to 228,504.99, 315,372.48 and 130,388.42 is: 179,956.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,504.99 : 315,372.48 = 130,388.42 : x
  2. Step 2: Convert to fraction form
    228,504.99/315,372.48 = 130,388.42/x
  3. Step 3: Cross multiply
    228,504.99x = 315,372.48 × 130,388.42
  4. Step 4: Simplify right side
    228,504.99x = 41,120,919,378.68
  5. Step 5: Solve for x
    x = 41,120,919,378.68/228,504.99
  6. Step 6: Final answer
    x = 179,956.33

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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.