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Finding the Fourth Proportional to 326,575.26, 489,893.81 and 126,911.04

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Solution

The fourth proportional to 326,575.26, 489,893.81 and 126,911.04 is: 190,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,575.26 : 489,893.81 = 126,911.04 : x
  2. Step 2: Convert to fraction form
    326,575.26/489,893.81 = 126,911.04/x
  3. Step 3: Cross multiply
    326,575.26x = 489,893.81 × 126,911.04
  4. Step 4: Simplify right side
    326,575.26x = 62,172,932,916.66
  5. Step 5: Solve for x
    x = 62,172,932,916.66/326,575.26
  6. Step 6: Final answer
    x = 190,378.58

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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.