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Finding the Fourth Proportional to 331,663.98, 457,697.87 and 188,431.89

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Solution

The fourth proportional to 331,663.98, 457,697.87 and 188,431.89 is: 260,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,663.98 : 457,697.87 = 188,431.89 : x
  2. Step 2: Convert to fraction form
    331,663.98/457,697.87 = 188,431.89/x
  3. Step 3: Cross multiply
    331,663.98x = 457,697.87 × 188,431.89
  4. Step 4: Simplify right side
    331,663.98x = 86,244,873,801.10
  5. Step 5: Solve for x
    x = 86,244,873,801.10/331,663.98
  6. Step 6: Final answer
    x = 260,036.90

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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.