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Finding the Fourth Proportional to 436,661.25, 654,991.83 and 121,118.17

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Solution

The fourth proportional to 436,661.25, 654,991.83 and 121,118.17 is: 181,677.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,661.25 : 654,991.83 = 121,118.17 : x
  2. Step 2: Convert to fraction form
    436,661.25/654,991.83 = 121,118.17/x
  3. Step 3: Cross multiply
    436,661.25x = 654,991.83 × 121,118.17
  4. Step 4: Simplify right side
    436,661.25x = 79,331,408,236.80
  5. Step 5: Solve for x
    x = 79,331,408,236.80/436,661.25
  6. Step 6: Final answer
    x = 181,677.24

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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.