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Finding the Fourth Proportional to 305,469.60, 421,550.36 and 169,504.08

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Solution

The fourth proportional to 305,469.60, 421,550.36 and 169,504.08 is: 233,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,469.60 : 421,550.36 = 169,504.08 : x
  2. Step 2: Convert to fraction form
    305,469.60/421,550.36 = 169,504.08/x
  3. Step 3: Cross multiply
    305,469.60x = 421,550.36 × 169,504.08
  4. Step 4: Simplify right side
    305,469.60x = 71,454,505,945.47
  5. Step 5: Solve for x
    x = 71,454,505,945.47/305,469.60
  6. Step 6: Final answer
    x = 233,916.91

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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.