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Finding the Fourth Proportional to 403,609.80, 605,392.74 and 123,105

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Solution

The fourth proportional to 403,609.80, 605,392.74 and 123,105 is: 184,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,609.80 : 605,392.74 = 123,105 : x
  2. Step 2: Convert to fraction form
    403,609.80/605,392.74 = 123,105/x
  3. Step 3: Cross multiply
    403,609.80x = 605,392.74 × 123,105
  4. Step 4: Simplify right side
    403,609.80x = 74,526,873,257.70
  5. Step 5: Solve for x
    x = 74,526,873,257.70/403,609.80
  6. Step 6: Final answer
    x = 184,650.80

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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.