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Finding the Fourth Proportional to 802,906.30, 1,204,359.45 and 211,930.30

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Solution

The fourth proportional to 802,906.30, 1,204,359.45 and 211,930.30 is: 317,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,906.30 : 1,204,359.45 = 211,930.30 : x
  2. Step 2: Convert to fraction form
    802,906.30/1,204,359.45 = 211,930.30/x
  3. Step 3: Cross multiply
    802,906.30x = 1,204,359.45 × 211,930.30
  4. Step 4: Simplify right side
    802,906.30x = 255,240,259,546.34
  5. Step 5: Solve for x
    x = 255,240,259,546.34/802,906.30
  6. Step 6: Final answer
    x = 317,895.45

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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.