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Finding the Fourth Proportional to 328,650.11, 491,678.08 and 248,917.81

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Solution

The fourth proportional to 328,650.11, 491,678.08 and 248,917.81 is: 372,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,650.11 : 491,678.08 = 248,917.81 : x
  2. Step 2: Convert to fraction form
    328,650.11/491,678.08 = 248,917.81/x
  3. Step 3: Cross multiply
    328,650.11x = 491,678.08 × 248,917.81
  4. Step 4: Simplify right side
    328,650.11x = 122,387,430,450.32
  5. Step 5: Solve for x
    x = 122,387,430,450.32/328,650.11
  6. Step 6: Final answer
    x = 372,394.31

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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.