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Finding the Fourth Proportional to 316,692, 437,018.28 and 173,449

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Solution

The fourth proportional to 316,692, 437,018.28 and 173,449 is: 239,350.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,692 : 437,018.28 = 173,449 : x
  2. Step 2: Convert to fraction form
    316,692/437,018.28 = 173,449/x
  3. Step 3: Cross multiply
    316,692x = 437,018.28 × 173,449
  4. Step 4: Simplify right side
    316,692x = 75,800,383,647.72
  5. Step 5: Solve for x
    x = 75,800,383,647.72/316,692
  6. Step 6: Final answer
    x = 239,350.48

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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.