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Finding the Fourth Proportional to 307,736, 424,690.35 and 173,600

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Solution

The fourth proportional to 307,736, 424,690.35 and 173,600 is: 239,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,736 : 424,690.35 = 173,600 : x
  2. Step 2: Convert to fraction form
    307,736/424,690.35 = 173,600/x
  3. Step 3: Cross multiply
    307,736x = 424,690.35 × 173,600
  4. Step 4: Simplify right side
    307,736x = 73,726,244,760
  5. Step 5: Solve for x
    x = 73,726,244,760/307,736
  6. Step 6: Final answer
    x = 239,576.28

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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.