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Finding the Fourth Proportional to 326,630.36, 489,486.08 and 259,773.76

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Solution

The fourth proportional to 326,630.36, 489,486.08 and 259,773.76 is: 389,295.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,630.36 : 489,486.08 = 259,773.76 : x
  2. Step 2: Convert to fraction form
    326,630.36/489,486.08 = 259,773.76/x
  3. Step 3: Cross multiply
    326,630.36x = 489,486.08 × 259,773.76
  4. Step 4: Simplify right side
    326,630.36x = 127,155,639,469.26
  5. Step 5: Solve for x
    x = 127,155,639,469.26/326,630.36
  6. Step 6: Final answer
    x = 389,295.22

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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.