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Finding the Fourth Proportional to 215,426, 297,310.92 and 126,076.88

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Solution

The fourth proportional to 215,426, 297,310.92 and 126,076.88 is: 173,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,426 : 297,310.92 = 126,076.88 : x
  2. Step 2: Convert to fraction form
    215,426/297,310.92 = 126,076.88/x
  3. Step 3: Cross multiply
    215,426x = 297,310.92 × 126,076.88
  4. Step 4: Simplify right side
    215,426x = 37,484,033,183.53
  5. Step 5: Solve for x
    x = 37,484,033,183.53/215,426
  6. Step 6: Final answer
    x = 173,999.58

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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.