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Finding the Fourth Proportional to 218,487.17, 327,114.50 and 115,671.54

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Solution

The fourth proportional to 218,487.17, 327,114.50 and 115,671.54 is: 173,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,487.17 : 327,114.50 = 115,671.54 : x
  2. Step 2: Convert to fraction form
    218,487.17/327,114.50 = 115,671.54/x
  3. Step 3: Cross multiply
    218,487.17x = 327,114.50 × 115,671.54
  4. Step 4: Simplify right side
    218,487.17x = 37,837,837,392.97
  5. Step 5: Solve for x
    x = 37,837,837,392.97/218,487.17
  6. Step 6: Final answer
    x = 173,181.05

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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.