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Finding the Fourth Proportional to 277,978.18, 383,607.09 and 155,469.27

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Solution

The fourth proportional to 277,978.18, 383,607.09 and 155,469.27 is: 214,546.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,978.18 : 383,607.09 = 155,469.27 : x
  2. Step 2: Convert to fraction form
    277,978.18/383,607.09 = 155,469.27/x
  3. Step 3: Cross multiply
    277,978.18x = 383,607.09 × 155,469.27
  4. Step 4: Simplify right side
    277,978.18x = 59,639,115,687.65
  5. Step 5: Solve for x
    x = 59,639,115,687.65/277,978.18
  6. Step 6: Final answer
    x = 214,546.03

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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.