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Finding the Fourth Proportional to 423,654.81, 635,481.86 and 108,111.71

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Solution

The fourth proportional to 423,654.81, 635,481.86 and 108,111.71 is: 162,167.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,654.81 : 635,481.86 = 108,111.71 : x
  2. Step 2: Convert to fraction form
    423,654.81/635,481.86 = 108,111.71/x
  3. Step 3: Cross multiply
    423,654.81x = 635,481.86 × 108,111.71
  4. Step 4: Simplify right side
    423,654.81x = 68,703,031,606.73
  5. Step 5: Solve for x
    x = 68,703,031,606.73/423,654.81
  6. Step 6: Final answer
    x = 162,167.48

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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.