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Finding the Fourth Proportional to 207,999.28, 312,051 and 119,352.88

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Solution

The fourth proportional to 207,999.28, 312,051 and 119,352.88 is: 179,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,999.28 : 312,051 = 119,352.88 : x
  2. Step 2: Convert to fraction form
    207,999.28/312,051 = 119,352.88/x
  3. Step 3: Cross multiply
    207,999.28x = 312,051 × 119,352.88
  4. Step 4: Simplify right side
    207,999.28x = 37,244,185,556.88
  5. Step 5: Solve for x
    x = 37,244,185,556.88/207,999.28
  6. Step 6: Final answer
    x = 179,059.20

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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.