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Finding the Fourth Proportional to 325,930.60, 489,114.60 and 192,669.40

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Solution

The fourth proportional to 325,930.60, 489,114.60 and 192,669.40 is: 289,133.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,930.60 : 489,114.60 = 192,669.40 : x
  2. Step 2: Convert to fraction form
    325,930.60/489,114.60 = 192,669.40/x
  3. Step 3: Cross multiply
    325,930.60x = 489,114.60 × 192,669.40
  4. Step 4: Simplify right side
    325,930.60x = 94,237,416,513.24
  5. Step 5: Solve for x
    x = 94,237,416,513.24/325,930.60
  6. Step 6: Final answer
    x = 289,133.38

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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.