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Finding the Fourth Proportional to 445,129.96, 667,725.54 and 178,890.70

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Solution

The fourth proportional to 445,129.96, 667,725.54 and 178,890.70 is: 268,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,129.96 : 667,725.54 = 178,890.70 : x
  2. Step 2: Convert to fraction form
    445,129.96/667,725.54 = 178,890.70/x
  3. Step 3: Cross multiply
    445,129.96x = 667,725.54 × 178,890.70
  4. Step 4: Simplify right side
    445,129.96x = 119,449,889,258.48
  5. Step 5: Solve for x
    x = 119,449,889,258.48/445,129.96
  6. Step 6: Final answer
    x = 268,348.35

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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.