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Finding the Fourth Proportional to 500,387.12, 690,529 and 270,940.44

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Solution

The fourth proportional to 500,387.12, 690,529 and 270,940.44 is: 373,894.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,387.12 : 690,529 = 270,940.44 : x
  2. Step 2: Convert to fraction form
    500,387.12/690,529 = 270,940.44/x
  3. Step 3: Cross multiply
    500,387.12x = 690,529 × 270,940.44
  4. Step 4: Simplify right side
    500,387.12x = 187,092,231,092.76
  5. Step 5: Solve for x
    x = 187,092,231,092.76/500,387.12
  6. Step 6: Final answer
    x = 373,894.98

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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.