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Finding the Fourth Proportional to 490,905.20, 736,359.60 and 149,351.96

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Solution

The fourth proportional to 490,905.20, 736,359.60 and 149,351.96 is: 224,028.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,905.20 : 736,359.60 = 149,351.96 : x
  2. Step 2: Convert to fraction form
    490,905.20/736,359.60 = 149,351.96/x
  3. Step 3: Cross multiply
    490,905.20x = 736,359.60 × 149,351.96
  4. Step 4: Simplify right side
    490,905.20x = 109,976,749,524.82
  5. Step 5: Solve for x
    x = 109,976,749,524.82/490,905.20
  6. Step 6: Final answer
    x = 224,028.49

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1.5x scale

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.