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Finding the Fourth Proportional to 287,221.96, 396,108.30 and 179,801.80

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Solution

The fourth proportional to 287,221.96, 396,108.30 and 179,801.80 is: 247,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,221.96 : 396,108.30 = 179,801.80 : x
  2. Step 2: Convert to fraction form
    287,221.96/396,108.30 = 179,801.80/x
  3. Step 3: Cross multiply
    287,221.96x = 396,108.30 × 179,801.80
  4. Step 4: Simplify right side
    287,221.96x = 71,220,985,334.94
  5. Step 5: Solve for x
    x = 71,220,985,334.94/287,221.96
  6. Step 6: Final answer
    x = 247,964.97

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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.