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Finding the Fourth Proportional to 218,620.12, 301,835.06 and 178,429.72

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Solution

The fourth proportional to 218,620.12, 301,835.06 and 178,429.72 is: 246,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,620.12 : 301,835.06 = 178,429.72 : x
  2. Step 2: Convert to fraction form
    218,620.12/301,835.06 = 178,429.72/x
  3. Step 3: Cross multiply
    218,620.12x = 301,835.06 × 178,429.72
  4. Step 4: Simplify right side
    218,620.12x = 53,856,345,241.98
  5. Step 5: Solve for x
    x = 53,856,345,241.98/218,620.12
  6. Step 6: Final answer
    x = 246,346.70

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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.