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Finding the Fourth Proportional to 251,797.56, 347,481.95 and 138,620.31

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Solution

The fourth proportional to 251,797.56, 347,481.95 and 138,620.31 is: 191,296.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,797.56 : 347,481.95 = 138,620.31 : x
  2. Step 2: Convert to fraction form
    251,797.56/347,481.95 = 138,620.31/x
  3. Step 3: Cross multiply
    251,797.56x = 347,481.95 × 138,620.31
  4. Step 4: Simplify right side
    251,797.56x = 48,168,054,935.30
  5. Step 5: Solve for x
    x = 48,168,054,935.30/251,797.56
  6. Step 6: Final answer
    x = 191,296.75

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1.5x scale

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.