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Finding the Fourth Proportional to 296,811.78, 445,211.43 and 72,173.37

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Solution

The fourth proportional to 296,811.78, 445,211.43 and 72,173.37 is: 108,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,811.78 : 445,211.43 = 72,173.37 : x
  2. Step 2: Convert to fraction form
    296,811.78/445,211.43 = 72,173.37/x
  3. Step 3: Cross multiply
    296,811.78x = 445,211.43 × 72,173.37
  4. Step 4: Simplify right side
    296,811.78x = 32,132,409,265.62
  5. Step 5: Solve for x
    x = 32,132,409,265.62/296,811.78
  6. Step 6: Final answer
    x = 108,258.54

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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.