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Finding the Fourth Proportional to 326,504.20, 489,829.20 and 255,645.40

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Solution

The fourth proportional to 326,504.20, 489,829.20 and 255,645.40 is: 383,525.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,504.20 : 489,829.20 = 255,645.40 : x
  2. Step 2: Convert to fraction form
    326,504.20/489,829.20 = 255,645.40/x
  3. Step 3: Cross multiply
    326,504.20x = 489,829.20 × 255,645.40
  4. Step 4: Simplify right side
    326,504.20x = 125,222,581,765.68
  5. Step 5: Solve for x
    x = 125,222,581,765.68/326,504.20
  6. Step 6: Final answer
    x = 383,525.18

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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.