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Finding the Fourth Proportional to 274,902.78, 379,392.58 and 154,064.54

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Solution

The fourth proportional to 274,902.78, 379,392.58 and 154,064.54 is: 212,624.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,902.78 : 379,392.58 = 154,064.54 : x
  2. Step 2: Convert to fraction form
    274,902.78/379,392.58 = 154,064.54/x
  3. Step 3: Cross multiply
    274,902.78x = 379,392.58 × 154,064.54
  4. Step 4: Simplify right side
    274,902.78x = 58,450,943,317.11
  5. Step 5: Solve for x
    x = 58,450,943,317.11/274,902.78
  6. Step 6: Final answer
    x = 212,624.05

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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.