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Finding the Fourth Proportional to 323,568.45, 485,122.28 and 123,811.65

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Solution

The fourth proportional to 323,568.45, 485,122.28 and 123,811.65 is: 185,629.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,568.45 : 485,122.28 = 123,811.65 : x
  2. Step 2: Convert to fraction form
    323,568.45/485,122.28 = 123,811.65/x
  3. Step 3: Cross multiply
    323,568.45x = 485,122.28 × 123,811.65
  4. Step 4: Simplify right side
    323,568.45x = 60,063,789,319.50
  5. Step 5: Solve for x
    x = 60,063,789,319.50/323,568.45
  6. Step 6: Final answer
    x = 185,629.31

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1.5x scale

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.