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Finding the Fourth Proportional to 326,628.62, 489,483.45 and 259,772.03

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Solution

The fourth proportional to 326,628.62, 489,483.45 and 259,772.03 is: 389,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,628.62 : 489,483.45 = 259,772.03 : x
  2. Step 2: Convert to fraction form
    326,628.62/489,483.45 = 259,772.03/x
  3. Step 3: Cross multiply
    326,628.62x = 489,483.45 × 259,772.03
  4. Step 4: Simplify right side
    326,628.62x = 127,154,107,010.49
  5. Step 5: Solve for x
    x = 127,154,107,010.49/326,628.62
  6. Step 6: Final answer
    x = 389,292.61

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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.