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Finding the Fourth Proportional to 323,770.15, 485,655.23 and 218,016.55

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Solution

The fourth proportional to 323,770.15, 485,655.23 and 218,016.55 is: 327,024.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,770.15 : 485,655.23 = 218,016.55 : x
  2. Step 2: Convert to fraction form
    323,770.15/485,655.23 = 218,016.55/x
  3. Step 3: Cross multiply
    323,770.15x = 485,655.23 × 218,016.55
  4. Step 4: Simplify right side
    323,770.15x = 105,880,876,643.97
  5. Step 5: Solve for x
    x = 105,880,876,643.97/323,770.15
  6. Step 6: Final answer
    x = 327,024.83

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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.