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Finding the Fourth Proportional to 326,554.92, 489,739.56 and 126,832.68

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Solution

The fourth proportional to 326,554.92, 489,739.56 and 126,832.68 is: 190,212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,554.92 : 489,739.56 = 126,832.68 : x
  2. Step 2: Convert to fraction form
    326,554.92/489,739.56 = 126,832.68/x
  3. Step 3: Cross multiply
    326,554.92x = 489,739.56 × 126,832.68
  4. Step 4: Simplify right side
    326,554.92x = 62,114,980,896.82
  5. Step 5: Solve for x
    x = 62,114,980,896.82/326,554.92
  6. Step 6: Final answer
    x = 190,212.97

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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.