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Finding the Fourth Proportional to 445,776.97, 668,663.14 and 108,819.40

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Solution

The fourth proportional to 445,776.97, 668,663.14 and 108,819.40 is: 163,228.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,776.97 : 668,663.14 = 108,819.40 : x
  2. Step 2: Convert to fraction form
    445,776.97/668,663.14 = 108,819.40/x
  3. Step 3: Cross multiply
    445,776.97x = 668,663.14 × 108,819.40
  4. Step 4: Simplify right side
    445,776.97x = 72,763,518,353.60
  5. Step 5: Solve for x
    x = 72,763,518,353.60/445,776.97
  6. Step 6: Final answer
    x = 163,228.53

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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.