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Finding the Fourth Proportional to 355,719.20, 534,745.20 and 251,261.60

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Solution

The fourth proportional to 355,719.20, 534,745.20 and 251,261.60 is: 377,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,719.20 : 534,745.20 = 251,261.60 : x
  2. Step 2: Convert to fraction form
    355,719.20/534,745.20 = 251,261.60/x
  3. Step 3: Cross multiply
    355,719.20x = 534,745.20 × 251,261.60
  4. Step 4: Simplify right side
    355,719.20x = 134,360,934,544.32
  5. Step 5: Solve for x
    x = 134,360,934,544.32/355,719.20
  6. Step 6: Final answer
    x = 377,716.28

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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.