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Finding the Fourth Proportional to 666,880, 1,000,321.62 and 168,244

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Solution

The fourth proportional to 666,880, 1,000,321.62 and 168,244 is: 252,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,880 : 1,000,321.62 = 168,244 : x
  2. Step 2: Convert to fraction form
    666,880/1,000,321.62 = 168,244/x
  3. Step 3: Cross multiply
    666,880x = 1,000,321.62 × 168,244
  4. Step 4: Simplify right side
    666,880x = 168,298,110,635.28
  5. Step 5: Solve for x
    x = 168,298,110,635.28/666,880
  6. Step 6: Final answer
    x = 252,366.41

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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.