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Finding the Fourth Proportional to 275,039.91, 379,552.74 and 154,180.80

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Solution

The fourth proportional to 275,039.91, 379,552.74 and 154,180.80 is: 212,768.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,039.91 : 379,552.74 = 154,180.80 : x
  2. Step 2: Convert to fraction form
    275,039.91/379,552.74 = 154,180.80/x
  3. Step 3: Cross multiply
    275,039.91x = 379,552.74 × 154,180.80
  4. Step 4: Simplify right side
    275,039.91x = 58,519,745,095.39
  5. Step 5: Solve for x
    x = 58,519,745,095.39/275,039.91
  6. Step 6: Final answer
    x = 212,768.19

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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.