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Finding the Fourth Proportional to 490,959.82, 736,356.03 and 135,890.65

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Solution

The fourth proportional to 490,959.82, 736,356.03 and 135,890.65 is: 203,812.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,959.82 : 736,356.03 = 135,890.65 : x
  2. Step 2: Convert to fraction form
    490,959.82/736,356.03 = 135,890.65/x
  3. Step 3: Cross multiply
    490,959.82x = 736,356.03 × 135,890.65
  4. Step 4: Simplify right side
    490,959.82x = 100,063,899,548.12
  5. Step 5: Solve for x
    x = 100,063,899,548.12/490,959.82
  6. Step 6: Final answer
    x = 203,812.81

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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.