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Finding the Fourth Proportional to 218,974.66, 302,185.46 and 118,372.66

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Solution

The fourth proportional to 218,974.66, 302,185.46 and 118,372.66 is: 163,354.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,974.66 : 302,185.46 = 118,372.66 : x
  2. Step 2: Convert to fraction form
    218,974.66/302,185.46 = 118,372.66/x
  3. Step 3: Cross multiply
    218,974.66x = 302,185.46 × 118,372.66
  4. Step 4: Simplify right side
    218,974.66x = 35,770,496,713.52
  5. Step 5: Solve for x
    x = 35,770,496,713.52/218,974.66
  6. Step 6: Final answer
    x = 163,354.50

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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.