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Finding the Fourth Proportional to 198,507.72, 273,935.84 and 111,287.04

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Solution

The fourth proportional to 198,507.72, 273,935.84 and 111,287.04 is: 153,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,507.72 : 273,935.84 = 111,287.04 : x
  2. Step 2: Convert to fraction form
    198,507.72/273,935.84 = 111,287.04/x
  3. Step 3: Cross multiply
    198,507.72x = 273,935.84 × 111,287.04
  4. Step 4: Simplify right side
    198,507.72x = 30,485,507,199.82
  5. Step 5: Solve for x
    x = 30,485,507,199.82/198,507.72
  6. Step 6: Final answer
    x = 153,573.41

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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.