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Finding the Fourth Proportional to 380,406.60, 570,198.02 and 247,382.33

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Solution

The fourth proportional to 380,406.60, 570,198.02 and 247,382.33 is: 370,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,406.60 : 570,198.02 = 247,382.33 : x
  2. Step 2: Convert to fraction form
    380,406.60/570,198.02 = 247,382.33/x
  3. Step 3: Cross multiply
    380,406.60x = 570,198.02 × 247,382.33
  4. Step 4: Simplify right side
    380,406.60x = 141,056,910,661.09
  5. Step 5: Solve for x
    x = 141,056,910,661.09/380,406.60
  6. Step 6: Final answer
    x = 370,805.63

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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.