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Finding the Fourth Proportional to 331,665.17, 457,710.17 and 188,449.47

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Solution

The fourth proportional to 331,665.17, 457,710.17 and 188,449.47 is: 260,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,665.17 : 457,710.17 = 188,449.47 : x
  2. Step 2: Convert to fraction form
    331,665.17/457,710.17 = 188,449.47/x
  3. Step 3: Cross multiply
    331,665.17x = 457,710.17 × 188,449.47
  4. Step 4: Simplify right side
    331,665.17x = 86,255,238,007.86
  5. Step 5: Solve for x
    x = 86,255,238,007.86/331,665.17
  6. Step 6: Final answer
    x = 260,067.22

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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.