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Finding the Fourth Proportional to 351,800.78, 485,537.18 and 222,751.25

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Solution

The fourth proportional to 351,800.78, 485,537.18 and 222,751.25 is: 307,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,800.78 : 485,537.18 = 222,751.25 : x
  2. Step 2: Convert to fraction form
    351,800.78/485,537.18 = 222,751.25/x
  3. Step 3: Cross multiply
    351,800.78x = 485,537.18 × 222,751.25
  4. Step 4: Simplify right side
    351,800.78x = 108,154,011,060.35
  5. Step 5: Solve for x
    x = 108,154,011,060.35/351,800.78
  6. Step 6: Final answer
    x = 307,429.71

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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.