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Finding the Fourth Proportional to 408,039.25, 612,057.64 and 108,519.58

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Solution

The fourth proportional to 408,039.25, 612,057.64 and 108,519.58 is: 162,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,039.25 : 612,057.64 = 108,519.58 : x
  2. Step 2: Convert to fraction form
    408,039.25/612,057.64 = 108,519.58/x
  3. Step 3: Cross multiply
    408,039.25x = 612,057.64 × 108,519.58
  4. Step 4: Simplify right side
    408,039.25x = 66,420,238,028.59
  5. Step 5: Solve for x
    x = 66,420,238,028.59/408,039.25
  6. Step 6: Final answer
    x = 162,779.04

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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.