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Finding the Fourth Proportional to 287,143.22, 396,270.70 and 159,826.88

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Solution

The fourth proportional to 287,143.22, 396,270.70 and 159,826.88 is: 220,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,143.22 : 396,270.70 = 159,826.88 : x
  2. Step 2: Convert to fraction form
    287,143.22/396,270.70 = 159,826.88/x
  3. Step 3: Cross multiply
    287,143.22x = 396,270.70 × 159,826.88
  4. Step 4: Simplify right side
    287,143.22x = 63,334,709,616.42
  5. Step 5: Solve for x
    x = 63,334,709,616.42/287,143.22
  6. Step 6: Final answer
    x = 220,568.36

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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.