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Finding the Fourth Proportional to 379,960.74, 524,351.34 and 218,844.72

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Solution

The fourth proportional to 379,960.74, 524,351.34 and 218,844.72 is: 302,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,960.74 : 524,351.34 = 218,844.72 : x
  2. Step 2: Convert to fraction form
    379,960.74/524,351.34 = 218,844.72/x
  3. Step 3: Cross multiply
    379,960.74x = 524,351.34 × 218,844.72
  4. Step 4: Simplify right side
    379,960.74x = 114,751,522,183.93
  5. Step 5: Solve for x
    x = 114,751,522,183.93/379,960.74
  6. Step 6: Final answer
    x = 302,008.89

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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.