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Finding the Fourth Proportional to 218,796.44, 328,194.70 and 69,048.38

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Solution

The fourth proportional to 218,796.44, 328,194.70 and 69,048.38 is: 103,572.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,796.44 : 328,194.70 = 69,048.38 : x
  2. Step 2: Convert to fraction form
    218,796.44/328,194.70 = 69,048.38/x
  3. Step 3: Cross multiply
    218,796.44x = 328,194.70 × 69,048.38
  4. Step 4: Simplify right side
    218,796.44x = 22,661,313,007.45
  5. Step 5: Solve for x
    x = 22,661,313,007.45/218,796.44
  6. Step 6: Final answer
    x = 103,572.59

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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.