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Finding the Fourth Proportional to 287,077.73, 395,756.61 and 201,930.53

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Solution

The fourth proportional to 287,077.73, 395,756.61 and 201,930.53 is: 278,375.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,077.73 : 395,756.61 = 201,930.53 : x
  2. Step 2: Convert to fraction form
    287,077.73/395,756.61 = 201,930.53/x
  3. Step 3: Cross multiply
    287,077.73x = 395,756.61 × 201,930.53
  4. Step 4: Simplify right side
    287,077.73x = 79,915,342,008.30
  5. Step 5: Solve for x
    x = 79,915,342,008.30/287,077.73
  6. Step 6: Final answer
    x = 278,375.27

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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.