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Finding the Fourth Proportional to 170,822.70, 256,234.05 and 162,657.90

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Solution

The fourth proportional to 170,822.70, 256,234.05 and 162,657.90 is: 243,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,822.70 : 256,234.05 = 162,657.90 : x
  2. Step 2: Convert to fraction form
    170,822.70/256,234.05 = 162,657.90/x
  3. Step 3: Cross multiply
    170,822.70x = 256,234.05 × 162,657.90
  4. Step 4: Simplify right side
    170,822.70x = 41,678,492,481.50
  5. Step 5: Solve for x
    x = 41,678,492,481.50/170,822.70
  6. Step 6: Final answer
    x = 243,986.85

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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.