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Finding the Fourth Proportional to 376,531, 519,616.43 and 206,768.77

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Solution

The fourth proportional to 376,531, 519,616.43 and 206,768.77 is: 285,342.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,531 : 519,616.43 = 206,768.77 : x
  2. Step 2: Convert to fraction form
    376,531/519,616.43 = 206,768.77/x
  3. Step 3: Cross multiply
    376,531x = 519,616.43 × 206,768.77
  4. Step 4: Simplify right side
    376,531x = 107,440,450,102.89
  5. Step 5: Solve for x
    x = 107,440,450,102.89/376,531
  6. Step 6: Final answer
    x = 285,342.91

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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.