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Finding the Fourth Proportional to 481,478.46, 664,654.86 and 318,233.29

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Solution

The fourth proportional to 481,478.46, 664,654.86 and 318,233.29 is: 439,303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,478.46 : 664,654.86 = 318,233.29 : x
  2. Step 2: Convert to fraction form
    481,478.46/664,654.86 = 318,233.29/x
  3. Step 3: Cross multiply
    481,478.46x = 664,654.86 × 318,233.29
  4. Step 4: Simplify right side
    481,478.46x = 211,515,301,150.65
  5. Step 5: Solve for x
    x = 211,515,301,150.65/481,478.46
  6. Step 6: Final answer
    x = 439,303.77

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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.