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Finding the Fourth Proportional to 481,458.10, 721,859.10 and 228,859.60

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Solution

The fourth proportional to 481,458.10, 721,859.10 and 228,859.60 is: 343,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,458.10 : 721,859.10 = 228,859.60 : x
  2. Step 2: Convert to fraction form
    481,458.10/721,859.10 = 228,859.60/x
  3. Step 3: Cross multiply
    481,458.10x = 721,859.10 × 228,859.60
  4. Step 4: Simplify right side
    481,458.10x = 165,204,384,882.36
  5. Step 5: Solve for x
    x = 165,204,384,882.36/481,458.10
  6. Step 6: Final answer
    x = 343,133.46

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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.