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Finding the Fourth Proportional to 437,879.70, 656,819.55 and 280,286.10

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Solution

The fourth proportional to 437,879.70, 656,819.55 and 280,286.10 is: 420,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,879.70 : 656,819.55 = 280,286.10 : x
  2. Step 2: Convert to fraction form
    437,879.70/656,819.55 = 280,286.10/x
  3. Step 3: Cross multiply
    437,879.70x = 656,819.55 × 280,286.10
  4. Step 4: Simplify right side
    437,879.70x = 184,097,390,073.26
  5. Step 5: Solve for x
    x = 184,097,390,073.26/437,879.70
  6. Step 6: Final answer
    x = 420,429.15

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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.