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Finding the Fourth Proportional to 287,220.96, 396,106.92 and 179,800.80

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Solution

The fourth proportional to 287,220.96, 396,106.92 and 179,800.80 is: 247,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,220.96 : 396,106.92 = 179,800.80 : x
  2. Step 2: Convert to fraction form
    287,220.96/396,106.92 = 179,800.80/x
  3. Step 3: Cross multiply
    287,220.96x = 396,106.92 × 179,800.80
  4. Step 4: Simplify right side
    287,220.96x = 71,220,341,101.54
  5. Step 5: Solve for x
    x = 71,220,341,101.54/287,220.96
  6. Step 6: Final answer
    x = 247,963.59

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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.