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Finding the Fourth Proportional to 326,687.52, 489,720.24 and 104,916

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Solution

The fourth proportional to 326,687.52, 489,720.24 and 104,916 is: 157,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,687.52 : 489,720.24 = 104,916 : x
  2. Step 2: Convert to fraction form
    326,687.52/489,720.24 = 104,916/x
  3. Step 3: Cross multiply
    326,687.52x = 489,720.24 × 104,916
  4. Step 4: Simplify right side
    326,687.52x = 51,379,488,699.84
  5. Step 5: Solve for x
    x = 51,379,488,699.84/326,687.52
  6. Step 6: Final answer
    x = 157,274.11

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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.