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Finding the Fourth Proportional to 313,876, 471,021.36 and 147,676.96

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Solution

The fourth proportional to 313,876, 471,021.36 and 147,676.96 is: 221,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,876 : 471,021.36 = 147,676.96 : x
  2. Step 2: Convert to fraction form
    313,876/471,021.36 = 147,676.96/x
  3. Step 3: Cross multiply
    313,876x = 471,021.36 × 147,676.96
  4. Step 4: Simplify right side
    313,876x = 69,559,002,539.87
  5. Step 5: Solve for x
    x = 69,559,002,539.87/313,876
  6. Step 6: Final answer
    x = 221,613.00

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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.