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Finding the Fourth Proportional to 278,604, 384,473.52 and 159,372

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Solution

The fourth proportional to 278,604, 384,473.52 and 159,372 is: 219,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,604 : 384,473.52 = 159,372 : x
  2. Step 2: Convert to fraction form
    278,604/384,473.52 = 159,372/x
  3. Step 3: Cross multiply
    278,604x = 384,473.52 × 159,372
  4. Step 4: Simplify right side
    278,604x = 61,274,313,829.44
  5. Step 5: Solve for x
    x = 61,274,313,829.44/278,604
  6. Step 6: Final answer
    x = 219,933.36

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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.