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Finding the Fourth Proportional to 259,766.60, 390,110.70 and 200,745.80

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Solution

The fourth proportional to 259,766.60, 390,110.70 and 200,745.80 is: 301,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,766.60 : 390,110.70 = 200,745.80 : x
  2. Step 2: Convert to fraction form
    259,766.60/390,110.70 = 200,745.80/x
  3. Step 3: Cross multiply
    259,766.60x = 390,110.70 × 200,745.80
  4. Step 4: Simplify right side
    259,766.60x = 78,313,084,560.06
  5. Step 5: Solve for x
    x = 78,313,084,560.06/259,766.60
  6. Step 6: Final answer
    x = 301,474.80

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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.