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Finding the Fourth Proportional to 550,451.21, 758,919.42 and 356,516.69

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Solution

The fourth proportional to 550,451.21, 758,919.42 and 356,516.69 is: 491,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,451.21 : 758,919.42 = 356,516.69 : x
  2. Step 2: Convert to fraction form
    550,451.21/758,919.42 = 356,516.69/x
  3. Step 3: Cross multiply
    550,451.21x = 758,919.42 × 356,516.69
  4. Step 4: Simplify right side
    550,451.21x = 270,567,435,800.52
  5. Step 5: Solve for x
    x = 270,567,435,800.52/550,451.21
  6. Step 6: Final answer
    x = 491,537.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.