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Finding the Fourth Proportional to 305,556.58, 421,687.79 and 169,590.54

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Solution

The fourth proportional to 305,556.58, 421,687.79 and 169,590.54 is: 234,045.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,556.58 : 421,687.79 = 169,590.54 : x
  2. Step 2: Convert to fraction form
    305,556.58/421,687.79 = 169,590.54/x
  3. Step 3: Cross multiply
    305,556.58x = 421,687.79 × 169,590.54
  4. Step 4: Simplify right side
    305,556.58x = 71,514,260,017.51
  5. Step 5: Solve for x
    x = 71,514,260,017.51/305,556.58
  6. Step 6: Final answer
    x = 234,045.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.