Home / 405,917.90-608,864.30-192,839.20

Finding the Fourth Proportional to 405,917.90, 608,864.30 and 192,839.20

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Solution

The fourth proportional to 405,917.90, 608,864.30 and 192,839.20 is: 289,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,917.90 : 608,864.30 = 192,839.20 : x
  2. Step 2: Convert to fraction form
    405,917.90/608,864.30 = 192,839.20/x
  3. Step 3: Cross multiply
    405,917.90x = 608,864.30 × 192,839.20
  4. Step 4: Simplify right side
    405,917.90x = 117,412,904,520.56
  5. Step 5: Solve for x
    x = 117,412,904,520.56/405,917.90
  6. Step 6: Final answer
    x = 289,252.84

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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.