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Finding the Fourth Proportional to 218,769.75, 301,902.30 and 118,167.75

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Solution

The fourth proportional to 218,769.75, 301,902.30 and 118,167.75 is: 163,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,769.75 : 301,902.30 = 118,167.75 : x
  2. Step 2: Convert to fraction form
    218,769.75/301,902.30 = 118,167.75/x
  3. Step 3: Cross multiply
    218,769.75x = 301,902.30 × 118,167.75
  4. Step 4: Simplify right side
    218,769.75x = 35,675,115,510.83
  5. Step 5: Solve for x
    x = 35,675,115,510.83/218,769.75
  6. Step 6: Final answer
    x = 163,071.52

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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.