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Finding the Fourth Proportional to 218,763, 301,893.15 and 118,161

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Solution

The fourth proportional to 218,763, 301,893.15 and 118,161 is: 163,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,763 : 301,893.15 = 118,161 : x
  2. Step 2: Convert to fraction form
    218,763/301,893.15 = 118,161/x
  3. Step 3: Cross multiply
    218,763x = 301,893.15 × 118,161
  4. Step 4: Simplify right side
    218,763x = 35,671,996,497.15
  5. Step 5: Solve for x
    x = 35,671,996,497.15/218,763
  6. Step 6: Final answer
    x = 163,062.29

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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.