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Finding the Fourth Proportional to 218,975.85, 302,185.85 and 118,373.85

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Solution

The fourth proportional to 218,975.85, 302,185.85 and 118,373.85 is: 163,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,975.85 : 302,185.85 = 118,373.85 : x
  2. Step 2: Convert to fraction form
    218,975.85/302,185.85 = 118,373.85/x
  3. Step 3: Cross multiply
    218,975.85x = 302,185.85 × 118,373.85
  4. Step 4: Simplify right side
    218,975.85x = 35,770,902,480.02
  5. Step 5: Solve for x
    x = 35,770,902,480.02/218,975.85
  6. Step 6: Final answer
    x = 163,355.47

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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.