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Finding the Fourth Proportional to 328,998.60, 494,016.30 and 189,030.60

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Solution

The fourth proportional to 328,998.60, 494,016.30 and 189,030.60 is: 283,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,998.60 : 494,016.30 = 189,030.60 : x
  2. Step 2: Convert to fraction form
    328,998.60/494,016.30 = 189,030.60/x
  3. Step 3: Cross multiply
    328,998.60x = 494,016.30 × 189,030.60
  4. Step 4: Simplify right side
    328,998.60x = 93,384,197,598.78
  5. Step 5: Solve for x
    x = 93,384,197,598.78/328,998.60
  6. Step 6: Final answer
    x = 283,843.75

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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.