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Finding the Fourth Proportional to 235,664.96, 325,212.32 and 128,235.29

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Solution

The fourth proportional to 235,664.96, 325,212.32 and 128,235.29 is: 176,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,664.96 : 325,212.32 = 128,235.29 : x
  2. Step 2: Convert to fraction form
    235,664.96/325,212.32 = 128,235.29/x
  3. Step 3: Cross multiply
    235,664.96x = 325,212.32 × 128,235.29
  4. Step 4: Simplify right side
    235,664.96x = 41,703,694,861.30
  5. Step 5: Solve for x
    x = 41,703,694,861.30/235,664.96
  6. Step 6: Final answer
    x = 176,961.80

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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.