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Finding the Fourth Proportional to 436,257.49, 654,400.80 and 120,687.97

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Solution

The fourth proportional to 436,257.49, 654,400.80 and 120,687.97 is: 181,035.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,257.49 : 654,400.80 = 120,687.97 : x
  2. Step 2: Convert to fraction form
    436,257.49/654,400.80 = 120,687.97/x
  3. Step 3: Cross multiply
    436,257.49x = 654,400.80 × 120,687.97
  4. Step 4: Simplify right side
    436,257.49x = 78,978,304,118.38
  5. Step 5: Solve for x
    x = 78,978,304,118.38/436,257.49
  6. Step 6: Final answer
    x = 181,035.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.