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Finding the Fourth Proportional to 280,760.72, 421,432.76 and 162,662.80

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Solution

The fourth proportional to 280,760.72, 421,432.76 and 162,662.80 is: 244,163.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,760.72 : 421,432.76 = 162,662.80 : x
  2. Step 2: Convert to fraction form
    280,760.72/421,432.76 = 162,662.80/x
  3. Step 3: Cross multiply
    280,760.72x = 421,432.76 × 162,662.80
  4. Step 4: Simplify right side
    280,760.72x = 68,551,432,753.33
  5. Step 5: Solve for x
    x = 68,551,432,753.33/280,760.72
  6. Step 6: Final answer
    x = 244,163.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.