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Finding the Fourth Proportional to 386,516.60, 579,504.90 and 228,663.80

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Solution

The fourth proportional to 386,516.60, 579,504.90 and 228,663.80 is: 342,835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,516.60 : 579,504.90 = 228,663.80 : x
  2. Step 2: Convert to fraction form
    386,516.60/579,504.90 = 228,663.80/x
  3. Step 3: Cross multiply
    386,516.60x = 579,504.90 × 228,663.80
  4. Step 4: Simplify right side
    386,516.60x = 132,511,792,552.62
  5. Step 5: Solve for x
    x = 132,511,792,552.62/386,516.60
  6. Step 6: Final answer
    x = 342,835.97

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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.