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Finding the Fourth Proportional to 208,619.61, 312,847.52 and 73,654.88

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Solution

The fourth proportional to 208,619.61, 312,847.52 and 73,654.88 is: 110,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,619.61 : 312,847.52 = 73,654.88 : x
  2. Step 2: Convert to fraction form
    208,619.61/312,847.52 = 73,654.88/x
  3. Step 3: Cross multiply
    208,619.61x = 312,847.52 × 73,654.88
  4. Step 4: Simplify right side
    208,619.61x = 23,042,744,611.39
  5. Step 5: Solve for x
    x = 23,042,744,611.39/208,619.61
  6. Step 6: Final answer
    x = 110,453.40

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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.