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Finding the Fourth Proportional to 666,660, 1,000,093.88 and 217,276.61

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Solution

The fourth proportional to 666,660, 1,000,093.88 and 217,276.61 is: 325,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,660 : 1,000,093.88 = 217,276.61 : x
  2. Step 2: Convert to fraction form
    666,660/1,000,093.88 = 217,276.61/x
  3. Step 3: Cross multiply
    666,660x = 1,000,093.88 × 217,276.61
  4. Step 4: Simplify right side
    666,660x = 217,297,001,841.29
  5. Step 5: Solve for x
    x = 217,297,001,841.29/666,660
  6. Step 6: Final answer
    x = 325,948.76

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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.