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Finding the Fourth Proportional to 259,662.60, 389,712.60 and 102,004.20

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Solution

The fourth proportional to 259,662.60, 389,712.60 and 102,004.20 is: 153,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,662.60 : 389,712.60 = 102,004.20 : x
  2. Step 2: Convert to fraction form
    259,662.60/389,712.60 = 102,004.20/x
  3. Step 3: Cross multiply
    259,662.60x = 389,712.60 × 102,004.20
  4. Step 4: Simplify right side
    259,662.60x = 39,752,321,992.92
  5. Step 5: Solve for x
    x = 39,752,321,992.92/259,662.60
  6. Step 6: Final answer
    x = 153,092.21

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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.