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Finding the Fourth Proportional to 404,162.40, 606,221.76 and 123,679.68

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Solution

The fourth proportional to 404,162.40, 606,221.76 and 123,679.68 is: 185,512.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,162.40 : 606,221.76 = 123,679.68 : x
  2. Step 2: Convert to fraction form
    404,162.40/606,221.76 = 123,679.68/x
  3. Step 3: Cross multiply
    404,162.40x = 606,221.76 × 123,679.68
  4. Step 4: Simplify right side
    404,162.40x = 74,977,313,285.84
  5. Step 5: Solve for x
    x = 74,977,313,285.84/404,162.40
  6. Step 6: Final answer
    x = 185,512.84

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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.