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Finding the Fourth Proportional to 490,858.96, 736,289.45 and 135,874.03

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Solution

The fourth proportional to 490,858.96, 736,289.45 and 135,874.03 is: 203,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,858.96 : 736,289.45 = 135,874.03 : x
  2. Step 2: Convert to fraction form
    490,858.96/736,289.45 = 135,874.03/x
  3. Step 3: Cross multiply
    490,858.96x = 736,289.45 × 135,874.03
  4. Step 4: Simplify right side
    490,858.96x = 100,042,614,817.98
  5. Step 5: Solve for x
    x = 100,042,614,817.98/490,858.96
  6. Step 6: Final answer
    x = 203,811.32

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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.