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Finding the Fourth Proportional to 331,879.20, 457,966.08 and 188,606.40

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Solution

The fourth proportional to 331,879.20, 457,966.08 and 188,606.40 is: 260,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,879.20 : 457,966.08 = 188,606.40 : x
  2. Step 2: Convert to fraction form
    331,879.20/457,966.08 = 188,606.40/x
  3. Step 3: Cross multiply
    331,879.20x = 457,966.08 × 188,606.40
  4. Step 4: Simplify right side
    331,879.20x = 86,375,333,670.91
  5. Step 5: Solve for x
    x = 86,375,333,670.91/331,879.20
  6. Step 6: Final answer
    x = 260,261.37

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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.