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Finding the Fourth Proportional to 315,662.68, 435,506.44 and 179,662.56

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Solution

The fourth proportional to 315,662.68, 435,506.44 and 179,662.56 is: 247,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,662.68 : 435,506.44 = 179,662.56 : x
  2. Step 2: Convert to fraction form
    315,662.68/435,506.44 = 179,662.56/x
  3. Step 3: Cross multiply
    315,662.68x = 435,506.44 × 179,662.56
  4. Step 4: Simplify right side
    315,662.68x = 78,244,201,008.57
  5. Step 5: Solve for x
    x = 78,244,201,008.57/315,662.68
  6. Step 6: Final answer
    x = 247,872.83

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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.