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Finding the Fourth Proportional to 263,886.60, 395,084.70 and 205,404.60

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Solution

The fourth proportional to 263,886.60, 395,084.70 and 205,404.60 is: 307,526.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,886.60 : 395,084.70 = 205,404.60 : x
  2. Step 2: Convert to fraction form
    263,886.60/395,084.70 = 205,404.60/x
  3. Step 3: Cross multiply
    263,886.60x = 395,084.70 × 205,404.60
  4. Step 4: Simplify right side
    263,886.60x = 81,152,214,769.62
  5. Step 5: Solve for x
    x = 81,152,214,769.62/263,886.60
  6. Step 6: Final answer
    x = 307,526.85

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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.