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Finding the Fourth Proportional to 328,654.44, 493,009.90 and 115,404.03

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Solution

The fourth proportional to 328,654.44, 493,009.90 and 115,404.03 is: 173,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,654.44 : 493,009.90 = 115,404.03 : x
  2. Step 2: Convert to fraction form
    328,654.44/493,009.90 = 115,404.03/x
  3. Step 3: Cross multiply
    328,654.44x = 493,009.90 × 115,404.03
  4. Step 4: Simplify right side
    328,654.44x = 56,895,329,001.39
  5. Step 5: Solve for x
    x = 56,895,329,001.39/328,654.44
  6. Step 6: Final answer
    x = 173,115.96

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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.