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Finding the Fourth Proportional to 287,359.80, 396,604.78 and 166,576.64

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Solution

The fourth proportional to 287,359.80, 396,604.78 and 166,576.64 is: 229,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,359.80 : 396,604.78 = 166,576.64 : x
  2. Step 2: Convert to fraction form
    287,359.80/396,604.78 = 166,576.64/x
  3. Step 3: Cross multiply
    287,359.80x = 396,604.78 × 166,576.64
  4. Step 4: Simplify right side
    287,359.80x = 66,065,091,660.34
  5. Step 5: Solve for x
    x = 66,065,091,660.34/287,359.80
  6. Step 6: Final answer
    x = 229,903.74

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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.