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Finding the Fourth Proportional to 326,093.80, 489,140.70 and 219,805.60

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Solution

The fourth proportional to 326,093.80, 489,140.70 and 219,805.60 is: 329,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,093.80 : 489,140.70 = 219,805.60 : x
  2. Step 2: Convert to fraction form
    326,093.80/489,140.70 = 219,805.60/x
  3. Step 3: Cross multiply
    326,093.80x = 489,140.70 × 219,805.60
  4. Step 4: Simplify right side
    326,093.80x = 107,515,865,047.92
  5. Step 5: Solve for x
    x = 107,515,865,047.92/326,093.80
  6. Step 6: Final answer
    x = 329,708.40

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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.