Home / 287,185.62-430,778.55-129,229.56

Finding the Fourth Proportional to 287,185.62, 430,778.55 and 129,229.56

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Solution

The fourth proportional to 287,185.62, 430,778.55 and 129,229.56 is: 193,844.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,185.62 : 430,778.55 = 129,229.56 : x
  2. Step 2: Convert to fraction form
    287,185.62/430,778.55 = 129,229.56/x
  3. Step 3: Cross multiply
    287,185.62x = 430,778.55 × 129,229.56
  4. Step 4: Simplify right side
    287,185.62x = 55,669,322,473.94
  5. Step 5: Solve for x
    x = 55,669,322,473.94/287,185.62
  6. Step 6: Final answer
    x = 193,844.39

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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.