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Finding the Fourth Proportional to 287,080.97, 396,145.96 and 166,230.45

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Solution

The fourth proportional to 287,080.97, 396,145.96 and 166,230.45 is: 229,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,080.97 : 396,145.96 = 166,230.45 : x
  2. Step 2: Convert to fraction form
    287,080.97/396,145.96 = 166,230.45/x
  3. Step 3: Cross multiply
    287,080.97x = 396,145.96 × 166,230.45
  4. Step 4: Simplify right side
    287,080.97x = 65,851,520,780.91
  5. Step 5: Solve for x
    x = 65,851,520,780.91/287,080.97
  6. Step 6: Final answer
    x = 229,383.10

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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.