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Finding the Fourth Proportional to 505,421.73, 757,879.02 and 168,343.83

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Solution

The fourth proportional to 505,421.73, 757,879.02 and 168,343.83 is: 252,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,421.73 : 757,879.02 = 168,343.83 : x
  2. Step 2: Convert to fraction form
    505,421.73/757,879.02 = 168,343.83/x
  3. Step 3: Cross multiply
    505,421.73x = 757,879.02 × 168,343.83
  4. Step 4: Simplify right side
    505,421.73x = 127,584,256,903.45
  5. Step 5: Solve for x
    x = 127,584,256,903.45/505,421.73
  6. Step 6: Final answer
    x = 252,431.29

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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.