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Finding the Fourth Proportional to 437,607.20, 656,410.80 and 105,183.20

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Solution

The fourth proportional to 437,607.20, 656,410.80 and 105,183.20 is: 157,774.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,607.20 : 656,410.80 = 105,183.20 : x
  2. Step 2: Convert to fraction form
    437,607.20/656,410.80 = 105,183.20/x
  3. Step 3: Cross multiply
    437,607.20x = 656,410.80 × 105,183.20
  4. Step 4: Simplify right side
    437,607.20x = 69,043,388,458.56
  5. Step 5: Solve for x
    x = 69,043,388,458.56/437,607.20
  6. Step 6: Final answer
    x = 157,774.80

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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.