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Finding the Fourth Proportional to 290,183.96, 435,221.94 and 121,658.60

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Solution

The fourth proportional to 290,183.96, 435,221.94 and 121,658.60 is: 182,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,183.96 : 435,221.94 = 121,658.60 : x
  2. Step 2: Convert to fraction form
    290,183.96/435,221.94 = 121,658.60/x
  3. Step 3: Cross multiply
    290,183.96x = 435,221.94 × 121,658.60
  4. Step 4: Simplify right side
    290,183.96x = 52,948,491,909.68
  5. Step 5: Solve for x
    x = 52,948,491,909.68/290,183.96
  6. Step 6: Final answer
    x = 182,465.26

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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.