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Finding the Fourth Proportional to 326,625.37, 489,478.57 and 259,768.78

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Solution

The fourth proportional to 326,625.37, 489,478.57 and 259,768.78 is: 389,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,625.37 : 489,478.57 = 259,768.78 : x
  2. Step 2: Convert to fraction form
    326,625.37/489,478.57 = 259,768.78/x
  3. Step 3: Cross multiply
    326,625.37x = 489,478.57 × 259,768.78
  4. Step 4: Simplify right side
    326,625.37x = 127,151,250,965.05
  5. Step 5: Solve for x
    x = 127,151,250,965.05/326,625.37
  6. Step 6: Final answer
    x = 389,287.74

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1.5x scale

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.