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Finding the Fourth Proportional to 287,227.90, 396,366.77 and 159,903.50

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Solution

The fourth proportional to 287,227.90, 396,366.77 and 159,903.50 is: 220,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,227.90 : 396,366.77 = 159,903.50 : x
  2. Step 2: Convert to fraction form
    287,227.90/396,366.77 = 159,903.50/x
  3. Step 3: Cross multiply
    287,227.90x = 396,366.77 × 159,903.50
  4. Step 4: Simplify right side
    287,227.90x = 63,380,435,197.37
  5. Step 5: Solve for x
    x = 63,380,435,197.37/287,227.90
  6. Step 6: Final answer
    x = 220,662.53

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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.