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Finding the Fourth Proportional to 405,352.43, 608,053.72 and 135,504.85

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Solution

The fourth proportional to 405,352.43, 608,053.72 and 135,504.85 is: 203,265.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,352.43 : 608,053.72 = 135,504.85 : x
  2. Step 2: Convert to fraction form
    405,352.43/608,053.72 = 135,504.85/x
  3. Step 3: Cross multiply
    405,352.43x = 608,053.72 × 135,504.85
  4. Step 4: Simplify right side
    405,352.43x = 82,394,229,049.99
  5. Step 5: Solve for x
    x = 82,394,229,049.99/405,352.43
  6. Step 6: Final answer
    x = 203,265.66

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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.