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Finding the Fourth Proportional to 218,936.48, 328,527.70 and 119,103.64

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Solution

The fourth proportional to 218,936.48, 328,527.70 and 119,103.64 is: 178,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,936.48 : 328,527.70 = 119,103.64 : x
  2. Step 2: Convert to fraction form
    218,936.48/328,527.70 = 119,103.64/x
  3. Step 3: Cross multiply
    218,936.48x = 328,527.70 × 119,103.64
  4. Step 4: Simplify right side
    218,936.48x = 39,128,843,791.75
  5. Step 5: Solve for x
    x = 39,128,843,791.75/218,936.48
  6. Step 6: Final answer
    x = 178,722.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.