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Finding the Fourth Proportional to 218,992.44, 302,209.87 and 118,390.44

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Solution

The fourth proportional to 218,992.44, 302,209.87 and 118,390.44 is: 163,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,992.44 : 302,209.87 = 118,390.44 : x
  2. Step 2: Convert to fraction form
    218,992.44/302,209.87 = 118,390.44/x
  3. Step 3: Cross multiply
    218,992.44x = 302,209.87 × 118,390.44
  4. Step 4: Simplify right side
    218,992.44x = 35,778,759,481.64
  5. Step 5: Solve for x
    x = 35,778,759,481.64/218,992.44
  6. Step 6: Final answer
    x = 163,378.97

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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.