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Finding the Fourth Proportional to 445,581.80, 668,371.10 and 108,618.60

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Solution

The fourth proportional to 445,581.80, 668,371.10 and 108,618.60 is: 162,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,581.80 : 668,371.10 = 108,618.60 : x
  2. Step 2: Convert to fraction form
    445,581.80/668,371.10 = 108,618.60/x
  3. Step 3: Cross multiply
    445,581.80x = 668,371.10 × 108,618.60
  4. Step 4: Simplify right side
    445,581.80x = 72,597,533,162.46
  5. Step 5: Solve for x
    x = 72,597,533,162.46/445,581.80
  6. Step 6: Final answer
    x = 162,927.51

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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.