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Finding the Fourth Proportional to 303,078.70, 455,602.20 and 214,942.60

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Solution

The fourth proportional to 303,078.70, 455,602.20 and 214,942.60 is: 323,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,078.70 : 455,602.20 = 214,942.60 : x
  2. Step 2: Convert to fraction form
    303,078.70/455,602.20 = 214,942.60/x
  3. Step 3: Cross multiply
    303,078.70x = 455,602.20 × 214,942.60
  4. Step 4: Simplify right side
    303,078.70x = 97,928,321,433.72
  5. Step 5: Solve for x
    x = 97,928,321,433.72/303,078.70
  6. Step 6: Final answer
    x = 323,111.86

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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.