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Finding the Fourth Proportional to 269,662.12, 404,579.52 and 129,430.60

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Solution

The fourth proportional to 269,662.12, 404,579.52 and 129,430.60 is: 194,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,662.12 : 404,579.52 = 129,430.60 : x
  2. Step 2: Convert to fraction form
    269,662.12/404,579.52 = 129,430.60/x
  3. Step 3: Cross multiply
    269,662.12x = 404,579.52 × 129,430.60
  4. Step 4: Simplify right side
    269,662.12x = 52,364,970,021.31
  5. Step 5: Solve for x
    x = 52,364,970,021.31/269,662.12
  6. Step 6: Final answer
    x = 194,187.34

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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.