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Finding the Fourth Proportional to 331,636.21, 497,559.47 and 118,399.54

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Solution

The fourth proportional to 331,636.21, 497,559.47 and 118,399.54 is: 177,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,636.21 : 497,559.47 = 118,399.54 : x
  2. Step 2: Convert to fraction form
    331,636.21/497,559.47 = 118,399.54/x
  3. Step 3: Cross multiply
    331,636.21x = 497,559.47 × 118,399.54
  4. Step 4: Simplify right side
    331,636.21x = 58,910,812,370.64
  5. Step 5: Solve for x
    x = 58,910,812,370.64/331,636.21
  6. Step 6: Final answer
    x = 177,636.85

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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.