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Finding the Fourth Proportional to 377,992.72, 521,605.18 and 208,226.84

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Solution

The fourth proportional to 377,992.72, 521,605.18 and 208,226.84 is: 287,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,992.72 : 521,605.18 = 208,226.84 : x
  2. Step 2: Convert to fraction form
    377,992.72/521,605.18 = 208,226.84/x
  3. Step 3: Cross multiply
    377,992.72x = 521,605.18 × 208,226.84
  4. Step 4: Simplify right side
    377,992.72x = 108,612,198,359.03
  5. Step 5: Solve for x
    x = 108,612,198,359.03/377,992.72
  6. Step 6: Final answer
    x = 287,339.39

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1.5x scale

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.