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Finding the Fourth Proportional to 345,476.70, 517,044.60 and 212,441.22

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Solution

The fourth proportional to 345,476.70, 517,044.60 and 212,441.22 is: 317,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,476.70 : 517,044.60 = 212,441.22 : x
  2. Step 2: Convert to fraction form
    345,476.70/517,044.60 = 212,441.22/x
  3. Step 3: Cross multiply
    345,476.70x = 517,044.60 × 212,441.22
  4. Step 4: Simplify right side
    345,476.70x = 109,841,585,618.41
  5. Step 5: Solve for x
    x = 109,841,585,618.41/345,476.70
  6. Step 6: Final answer
    x = 317,942.09

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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.