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Finding the Fourth Proportional to 253,990.30, 380,958.72 and 104,246.44

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Solution

The fourth proportional to 253,990.30, 380,958.72 and 104,246.44 is: 156,358.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,990.30 : 380,958.72 = 104,246.44 : x
  2. Step 2: Convert to fraction form
    253,990.30/380,958.72 = 104,246.44/x
  3. Step 3: Cross multiply
    253,990.30x = 380,958.72 × 104,246.44
  4. Step 4: Simplify right side
    253,990.30x = 39,713,590,346.96
  5. Step 5: Solve for x
    x = 39,713,590,346.96/253,990.30
  6. Step 6: Final answer
    x = 156,358.69

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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.