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Finding the Fourth Proportional to 262,230, 393,636.78 and 135,836.52

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Solution

The fourth proportional to 262,230, 393,636.78 and 135,836.52 is: 203,905.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,230 : 393,636.78 = 135,836.52 : x
  2. Step 2: Convert to fraction form
    262,230/393,636.78 = 135,836.52/x
  3. Step 3: Cross multiply
    262,230x = 393,636.78 × 135,836.52
  4. Step 4: Simplify right side
    262,230x = 53,470,250,339.21
  5. Step 5: Solve for x
    x = 53,470,250,339.21/262,230
  6. Step 6: Final answer
    x = 203,905.92

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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.