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Finding the Fourth Proportional to 405,379.27, 607,593.86 and 165,343.33

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Solution

The fourth proportional to 405,379.27, 607,593.86 and 165,343.33 is: 247,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,379.27 : 607,593.86 = 165,343.33 : x
  2. Step 2: Convert to fraction form
    405,379.27/607,593.86 = 165,343.33/x
  3. Step 3: Cross multiply
    405,379.27x = 607,593.86 × 165,343.33
  4. Step 4: Simplify right side
    405,379.27x = 100,461,589,235.05
  5. Step 5: Solve for x
    x = 100,461,589,235.05/405,379.27
  6. Step 6: Final answer
    x = 247,821.23

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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.