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Finding the Fourth Proportional to 287,169.64, 396,287.54 and 179,798.87

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Solution

The fourth proportional to 287,169.64, 396,287.54 and 179,798.87 is: 248,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,169.64 : 396,287.54 = 179,798.87 : x
  2. Step 2: Convert to fraction form
    287,169.64/396,287.54 = 179,798.87/x
  3. Step 3: Cross multiply
    287,169.64x = 396,287.54 × 179,798.87
  4. Step 4: Simplify right side
    287,169.64x = 71,252,052,653.05
  5. Step 5: Solve for x
    x = 71,252,052,653.05/287,169.64
  6. Step 6: Final answer
    x = 248,118.34

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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.