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Finding the Fourth Proportional to 446,429.62, 669,873.39 and 218,720.90

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Solution

The fourth proportional to 446,429.62, 669,873.39 and 218,720.90 is: 328,193.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,429.62 : 669,873.39 = 218,720.90 : x
  2. Step 2: Convert to fraction form
    446,429.62/669,873.39 = 218,720.90/x
  3. Step 3: Cross multiply
    446,429.62x = 669,873.39 × 218,720.90
  4. Step 4: Simplify right side
    446,429.62x = 146,515,312,421.54
  5. Step 5: Solve for x
    x = 146,515,312,421.54/446,429.62
  6. Step 6: Final answer
    x = 328,193.53

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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.