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Finding the Fourth Proportional to 353,936.76, 488,520.96 and 218,087.16

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Solution

The fourth proportional to 353,936.76, 488,520.96 and 218,087.16 is: 301,014.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,936.76 : 488,520.96 = 218,087.16 : x
  2. Step 2: Convert to fraction form
    353,936.76/488,520.96 = 218,087.16/x
  3. Step 3: Cross multiply
    353,936.76x = 488,520.96 × 218,087.16
  4. Step 4: Simplify right side
    353,936.76x = 106,540,148,766.87
  5. Step 5: Solve for x
    x = 106,540,148,766.87/353,936.76
  6. Step 6: Final answer
    x = 301,014.65

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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.