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Finding the Fourth Proportional to 279,992.82, 386,380.44 and 159,132

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Solution

The fourth proportional to 279,992.82, 386,380.44 and 159,132 is: 219,596.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,992.82 : 386,380.44 = 159,132 : x
  2. Step 2: Convert to fraction form
    279,992.82/386,380.44 = 159,132/x
  3. Step 3: Cross multiply
    279,992.82x = 386,380.44 × 159,132
  4. Step 4: Simplify right side
    279,992.82x = 61,485,492,178.08
  5. Step 5: Solve for x
    x = 61,485,492,178.08/279,992.82
  6. Step 6: Final answer
    x = 219,596.67

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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.