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Finding the Fourth Proportional to 287,253.27, 395,553.58 and 280,880.60

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Solution

The fourth proportional to 287,253.27, 395,553.58 and 280,880.60 is: 386,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,253.27 : 395,553.58 = 280,880.60 : x
  2. Step 2: Convert to fraction form
    287,253.27/395,553.58 = 280,880.60/x
  3. Step 3: Cross multiply
    287,253.27x = 395,553.58 × 280,880.60
  4. Step 4: Simplify right side
    287,253.27x = 111,103,324,202.58
  5. Step 5: Solve for x
    x = 111,103,324,202.58/287,253.27
  6. Step 6: Final answer
    x = 386,778.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.