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Finding the Fourth Proportional to 304,792.80, 420,819.60 and 190,245.96

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Solution

The fourth proportional to 304,792.80, 420,819.60 and 190,245.96 is: 262,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,792.80 : 420,819.60 = 190,245.96 : x
  2. Step 2: Convert to fraction form
    304,792.80/420,819.60 = 190,245.96/x
  3. Step 3: Cross multiply
    304,792.80x = 420,819.60 × 190,245.96
  4. Step 4: Simplify right side
    304,792.80x = 80,059,228,788.82
  5. Step 5: Solve for x
    x = 80,059,228,788.82/304,792.80
  6. Step 6: Final answer
    x = 262,667.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.