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Finding the Fourth Proportional to 437,578.20, 655,055.10 and 259,993.80

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Solution

The fourth proportional to 437,578.20, 655,055.10 and 259,993.80 is: 389,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,578.20 : 655,055.10 = 259,993.80 : x
  2. Step 2: Convert to fraction form
    437,578.20/655,055.10 = 259,993.80/x
  3. Step 3: Cross multiply
    437,578.20x = 655,055.10 × 259,993.80
  4. Step 4: Simplify right side
    437,578.20x = 170,310,264,658.38
  5. Step 5: Solve for x
    x = 170,310,264,658.38/437,578.20
  6. Step 6: Final answer
    x = 389,211.04

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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.