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Finding the Fourth Proportional to 338,991.11, 508,472.09 and 102,326.73

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Solution

The fourth proportional to 338,991.11, 508,472.09 and 102,326.73 is: 153,485.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,991.11 : 508,472.09 = 102,326.73 : x
  2. Step 2: Convert to fraction form
    338,991.11/508,472.09 = 102,326.73/x
  3. Step 3: Cross multiply
    338,991.11x = 508,472.09 × 102,326.73
  4. Step 4: Simplify right side
    338,991.11x = 52,030,286,448.35
  5. Step 5: Solve for x
    x = 52,030,286,448.35/338,991.11
  6. Step 6: Final answer
    x = 153,485.69

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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.