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Finding the Fourth Proportional to 379,634, 523,849.44 and 209,845.04

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Solution

The fourth proportional to 379,634, 523,849.44 and 209,845.04 is: 289,561.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,634 : 523,849.44 = 209,845.04 : x
  2. Step 2: Convert to fraction form
    379,634/523,849.44 = 209,845.04/x
  3. Step 3: Cross multiply
    379,634x = 523,849.44 × 209,845.04
  4. Step 4: Simplify right side
    379,634x = 109,927,206,690.78
  5. Step 5: Solve for x
    x = 109,927,206,690.78/379,634
  6. Step 6: Final answer
    x = 289,561.02

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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.