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Finding the Fourth Proportional to 218,136.33, 327,379.47 and 112,985.37

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Solution

The fourth proportional to 218,136.33, 327,379.47 and 112,985.37 is: 169,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,136.33 : 327,379.47 = 112,985.37 : x
  2. Step 2: Convert to fraction form
    218,136.33/327,379.47 = 112,985.37/x
  3. Step 3: Cross multiply
    218,136.33x = 327,379.47 × 112,985.37
  4. Step 4: Simplify right side
    218,136.33x = 36,989,090,548.35
  5. Step 5: Solve for x
    x = 36,989,090,548.35/218,136.33
  6. Step 6: Final answer
    x = 169,568.68

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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.