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Finding the Fourth Proportional to 445,788.11, 668,679.81 and 108,830.54

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Solution

The fourth proportional to 445,788.11, 668,679.81 and 108,830.54 is: 163,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,788.11 : 668,679.81 = 108,830.54 : x
  2. Step 2: Convert to fraction form
    445,788.11/668,679.81 = 108,830.54/x
  3. Step 3: Cross multiply
    445,788.11x = 668,679.81 × 108,830.54
  4. Step 4: Simplify right side
    445,788.11x = 72,772,781,466.00
  5. Step 5: Solve for x
    x = 72,772,781,466.00/445,788.11
  6. Step 6: Final answer
    x = 163,245.23

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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.