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Finding the Fourth Proportional to 490,851.11, 736,292.78 and 135,835.40

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Solution

The fourth proportional to 490,851.11, 736,292.78 and 135,835.40 is: 203,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,851.11 : 736,292.78 = 135,835.40 : x
  2. Step 2: Convert to fraction form
    490,851.11/736,292.78 = 135,835.40/x
  3. Step 3: Cross multiply
    490,851.11x = 736,292.78 × 135,835.40
  4. Step 4: Simplify right side
    490,851.11x = 100,014,624,288.41
  5. Step 5: Solve for x
    x = 100,014,624,288.41/490,851.11
  6. Step 6: Final answer
    x = 203,757.56

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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.