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Finding the Fourth Proportional to 404,540.80, 606,811.20 and 255,241.60

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Solution

The fourth proportional to 404,540.80, 606,811.20 and 255,241.60 is: 382,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,540.80 : 606,811.20 = 255,241.60 : x
  2. Step 2: Convert to fraction form
    404,540.80/606,811.20 = 255,241.60/x
  3. Step 3: Cross multiply
    404,540.80x = 606,811.20 × 255,241.60
  4. Step 4: Simplify right side
    404,540.80x = 154,883,461,585.92
  5. Step 5: Solve for x
    x = 154,883,461,585.92/404,540.80
  6. Step 6: Final answer
    x = 382,862.40

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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.