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Finding the Fourth Proportional to 324,043.60, 485,919.60 and 124,297.60

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Solution

The fourth proportional to 324,043.60, 485,919.60 and 124,297.60 is: 186,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,043.60 : 485,919.60 = 124,297.60 : x
  2. Step 2: Convert to fraction form
    324,043.60/485,919.60 = 124,297.60/x
  3. Step 3: Cross multiply
    324,043.60x = 485,919.60 × 124,297.60
  4. Step 4: Simplify right side
    324,043.60x = 60,398,640,072.96
  5. Step 5: Solve for x
    x = 60,398,640,072.96/324,043.60
  6. Step 6: Final answer
    x = 186,390.47

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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.