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Finding the Fourth Proportional to 401,435.62, 553,930.24 and 220,099.83

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Solution

The fourth proportional to 401,435.62, 553,930.24 and 220,099.83 is: 303,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,435.62 : 553,930.24 = 220,099.83 : x
  2. Step 2: Convert to fraction form
    401,435.62/553,930.24 = 220,099.83/x
  3. Step 3: Cross multiply
    401,435.62x = 553,930.24 × 220,099.83
  4. Step 4: Simplify right side
    401,435.62x = 121,919,950,555.36
  5. Step 5: Solve for x
    x = 121,919,950,555.36/401,435.62
  6. Step 6: Final answer
    x = 303,709.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.