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Finding the Fourth Proportional to 405,035.80, 607,067.70 and 168,256.60

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Solution

The fourth proportional to 405,035.80, 607,067.70 and 168,256.60 is: 252,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,035.80 : 607,067.70 = 168,256.60 : x
  2. Step 2: Convert to fraction form
    405,035.80/607,067.70 = 168,256.60/x
  3. Step 3: Cross multiply
    405,035.80x = 607,067.70 × 168,256.60
  4. Step 4: Simplify right side
    405,035.80x = 102,143,147,171.82
  5. Step 5: Solve for x
    x = 102,143,147,171.82/405,035.80
  6. Step 6: Final answer
    x = 252,183.01

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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.