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Finding the Fourth Proportional to 251,618.88, 347,234.88 and 138,448.64

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Solution

The fourth proportional to 251,618.88, 347,234.88 and 138,448.64 is: 191,059.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,618.88 : 347,234.88 = 138,448.64 : x
  2. Step 2: Convert to fraction form
    251,618.88/347,234.88 = 138,448.64/x
  3. Step 3: Cross multiply
    251,618.88x = 347,234.88 × 138,448.64
  4. Step 4: Simplify right side
    251,618.88x = 48,074,196,896.56
  5. Step 5: Solve for x
    x = 48,074,196,896.56/251,618.88
  6. Step 6: Final answer
    x = 191,059.58

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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.