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Finding the Fourth Proportional to 279,485.68, 385,630.44 and 166,286.32

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Solution

The fourth proportional to 279,485.68, 385,630.44 and 166,286.32 is: 229,439.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,485.68 : 385,630.44 = 166,286.32 : x
  2. Step 2: Convert to fraction form
    279,485.68/385,630.44 = 166,286.32/x
  3. Step 3: Cross multiply
    279,485.68x = 385,630.44 × 166,286.32
  4. Step 4: Simplify right side
    279,485.68x = 64,125,066,747.58
  5. Step 5: Solve for x
    x = 64,125,066,747.58/279,485.68
  6. Step 6: Final answer
    x = 229,439.54

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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.