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Finding the Fourth Proportional to 297,440.20, 445,814.70 and 119,859.40

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Solution

The fourth proportional to 297,440.20, 445,814.70 and 119,859.40 is: 179,649.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,440.20 : 445,814.70 = 119,859.40 : x
  2. Step 2: Convert to fraction form
    297,440.20/445,814.70 = 119,859.40/x
  3. Step 3: Cross multiply
    297,440.20x = 445,814.70 × 119,859.40
  4. Step 4: Simplify right side
    297,440.20x = 53,435,082,453.18
  5. Step 5: Solve for x
    x = 53,435,082,453.18/297,440.20
  6. Step 6: Final answer
    x = 179,649.83

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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.