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Finding the Fourth Proportional to 218,043.96, 300,918.42 and 126,194.28

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Solution

The fourth proportional to 218,043.96, 300,918.42 and 126,194.28 is: 174,158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,043.96 : 300,918.42 = 126,194.28 : x
  2. Step 2: Convert to fraction form
    218,043.96/300,918.42 = 126,194.28/x
  3. Step 3: Cross multiply
    218,043.96x = 300,918.42 × 126,194.28
  4. Step 4: Simplify right side
    218,043.96x = 37,974,183,350.64
  5. Step 5: Solve for x
    x = 37,974,183,350.64/218,043.96
  6. Step 6: Final answer
    x = 174,158.38

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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.