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Finding the Fourth Proportional to 418,771.68, 628,161.21 and 119,252.04

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Solution

The fourth proportional to 418,771.68, 628,161.21 and 119,252.04 is: 178,879.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,771.68 : 628,161.21 = 119,252.04 : x
  2. Step 2: Convert to fraction form
    418,771.68/628,161.21 = 119,252.04/x
  3. Step 3: Cross multiply
    418,771.68x = 628,161.21 × 119,252.04
  4. Step 4: Simplify right side
    418,771.68x = 74,909,505,741.37
  5. Step 5: Solve for x
    x = 74,909,505,741.37/418,771.68
  6. Step 6: Final answer
    x = 178,879.11

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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.