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Finding the Fourth Proportional to 275,482.38, 380,136.48 and 154,636.96

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Solution

The fourth proportional to 275,482.38, 380,136.48 and 154,636.96 is: 213,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,482.38 : 380,136.48 = 154,636.96 : x
  2. Step 2: Convert to fraction form
    275,482.38/380,136.48 = 154,636.96/x
  3. Step 3: Cross multiply
    275,482.38x = 380,136.48 × 154,636.96
  4. Step 4: Simplify right side
    275,482.38x = 58,783,150,021.77
  5. Step 5: Solve for x
    x = 58,783,150,021.77/275,482.38
  6. Step 6: Final answer
    x = 213,382.61

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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.