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Finding the Fourth Proportional to 218,993.88, 328,388.60 and 113,784.60

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Solution

The fourth proportional to 218,993.88, 328,388.60 and 113,784.60 is: 170,623.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,993.88 : 328,388.60 = 113,784.60 : x
  2. Step 2: Convert to fraction form
    218,993.88/328,388.60 = 113,784.60/x
  3. Step 3: Cross multiply
    218,993.88x = 328,388.60 × 113,784.60
  4. Step 4: Simplify right side
    218,993.88x = 37,365,565,495.56
  5. Step 5: Solve for x
    x = 37,365,565,495.56/218,993.88
  6. Step 6: Final answer
    x = 170,623.79

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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.