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Finding the Fourth Proportional to 287,262.75, 396,425.33 and 159,941.08

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Solution

The fourth proportional to 287,262.75, 396,425.33 and 159,941.08 is: 220,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,262.75 : 396,425.33 = 159,941.08 : x
  2. Step 2: Convert to fraction form
    287,262.75/396,425.33 = 159,941.08/x
  3. Step 3: Cross multiply
    287,262.75x = 396,425.33 × 159,941.08
  4. Step 4: Simplify right side
    287,262.75x = 63,404,694,228.57
  5. Step 5: Solve for x
    x = 63,404,694,228.57/287,262.75
  6. Step 6: Final answer
    x = 220,720.21

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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.