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Finding the Fourth Proportional to 328,409.96, 492,799.44 and 178,660.72

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Solution

The fourth proportional to 328,409.96, 492,799.44 and 178,660.72 is: 268,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,409.96 : 492,799.44 = 178,660.72 : x
  2. Step 2: Convert to fraction form
    328,409.96/492,799.44 = 178,660.72/x
  3. Step 3: Cross multiply
    328,409.96x = 492,799.44 × 178,660.72
  4. Step 4: Simplify right side
    328,409.96x = 88,043,902,766.00
  5. Step 5: Solve for x
    x = 88,043,902,766.00/328,409.96
  6. Step 6: Final answer
    x = 268,091.45

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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.