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Finding the Fourth Proportional to 279,185.46, 418,848.54 and 89,662.86

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Solution

The fourth proportional to 279,185.46, 418,848.54 and 89,662.86 is: 134,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,185.46 : 418,848.54 = 89,662.86 : x
  2. Step 2: Convert to fraction form
    279,185.46/418,848.54 = 89,662.86/x
  3. Step 3: Cross multiply
    279,185.46x = 418,848.54 × 89,662.86
  4. Step 4: Simplify right side
    279,185.46x = 37,555,158,003.22
  5. Step 5: Solve for x
    x = 37,555,158,003.22/279,185.46
  6. Step 6: Final answer
    x = 134,516.88

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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.